diff --git a/firebase-functions/paddle-webhook/.firebaserc b/firebase-functions/paddle-webhook/.firebaserc
new file mode 100644
index 00000000..fbf08108
--- /dev/null
+++ b/firebase-functions/paddle-webhook/.firebaserc
@@ -0,0 +1,5 @@
+{
+  "projects": {
+    "default": "web-sequence-local"
+  }
+}
diff --git a/firebase-functions/paddle-webhook/.gitignore b/firebase-functions/paddle-webhook/.gitignore
new file mode 100644
index 00000000..f6268525
--- /dev/null
+++ b/firebase-functions/paddle-webhook/.gitignore
@@ -0,0 +1,65 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+firebase-debug.log*
+
+# Firebase cache
+.firebase/
+
+# Firebase config
+
+# Uncomment this if you'd like others to create their own Firebase project.
+# For a team working on the same Firebase project(s), it is recommended to leave
+# it commented so all members can deploy to the same project(s) in .firebaserc.
+# .firebaserc
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
diff --git a/firebase-functions/paddle-webhook/README.md b/firebase-functions/paddle-webhook/README.md
new file mode 100644
index 00000000..00f284bb
--- /dev/null
+++ b/firebase-functions/paddle-webhook/README.md
@@ -0,0 +1,4 @@
+### Config Paddle public key
+- Download and save to file `paddle.pub_key`
+- `firebase functions:config:set paddle.pub_key="$(cat paddle.pub_key)"`
+- `firebase deploy`
\ No newline at end of file
diff --git a/firebase-functions/paddle-webhook/firebase.json b/firebase-functions/paddle-webhook/firebase.json
new file mode 100644
index 00000000..a0050acd
--- /dev/null
+++ b/firebase-functions/paddle-webhook/firebase.json
@@ -0,0 +1,4 @@
+{
+  "functions": {
+  }
+}
diff --git a/firebase-functions/paddle-webhook/functions/.eslintrc.json b/firebase-functions/paddle-webhook/functions/.eslintrc.json
new file mode 100644
index 00000000..3e91886b
--- /dev/null
+++ b/firebase-functions/paddle-webhook/functions/.eslintrc.json
@@ -0,0 +1,123 @@
+{
+  "parserOptions": {
+    // Required for certain syntax usages
+    "ecmaVersion": 6
+  },
+  "plugins": [
+    "promise"
+  ],
+  "extends": "eslint:recommended",
+  "rules": {
+    // Removed rule "disallow the use of console" from recommended eslint rules
+    "no-console": "off",
+
+    // Removed rule "disallow multiple spaces in regular expressions" from recommended eslint rules
+    "no-regex-spaces": "off",
+
+    // Removed rule "disallow the use of debugger" from recommended eslint rules
+    "no-debugger": "off",
+
+    // Removed rule "disallow unused variables" from recommended eslint rules
+    "no-unused-vars": "off",
+
+    // Removed rule "disallow mixed spaces and tabs for indentation" from recommended eslint rules
+    "no-mixed-spaces-and-tabs": "off",
+
+    // Removed rule "disallow the use of undeclared variables unless mentioned in /*global */ comments" from recommended eslint rules
+    "no-undef": "off",
+
+    // Warn against template literal placeholder syntax in regular strings
+    "no-template-curly-in-string": 1,
+
+    // Warn if return statements do not either always or never specify values
+    "consistent-return": 1,
+
+    // Warn if no return statements in callbacks of array methods
+    "array-callback-return": 1,
+
+    // Require the use of === and !==
+    "eqeqeq": 2,
+
+    // Disallow the use of alert, confirm, and prompt
+    "no-alert": 2,
+
+    // Disallow the use of arguments.caller or arguments.callee
+    "no-caller": 2,
+
+    // Disallow null comparisons without type-checking operators
+    "no-eq-null": 2,
+
+    // Disallow the use of eval()
+    "no-eval": 2,
+
+    // Warn against extending native types
+    "no-extend-native": 1,
+
+    // Warn against unnecessary calls to .bind()
+    "no-extra-bind": 1,
+
+    // Warn against unnecessary labels    
+    "no-extra-label": 1,
+
+    // Disallow leading or trailing decimal points in numeric literals
+    "no-floating-decimal": 2,
+
+    // Warn against shorthand type conversions
+    "no-implicit-coercion": 1,
+
+    // Warn against function declarations and expressions inside loop statements
+    "no-loop-func": 1,
+
+    // Disallow new operators with the Function object
+    "no-new-func": 2,
+
+    // Warn against new operators with the String, Number, and Boolean objects
+    "no-new-wrappers": 1,
+
+    // Disallow throwing literals as exceptions
+    "no-throw-literal": 2,
+
+    // Require using Error objects as Promise rejection reasons
+    "prefer-promise-reject-errors": 2,
+
+    // Enforce “for” loop update clause moving the counter in the right direction
+    "for-direction": 2,
+
+    // Enforce return statements in getters
+    "getter-return": 2,
+
+    // Disallow await inside of loops
+    "no-await-in-loop": 2,
+
+    // Disallow comparing against -0
+    "no-compare-neg-zero": 2,
+
+    // Warn against catch clause parameters from shadowing variables in the outer scope
+    "no-catch-shadow": 1,
+
+    // Disallow identifiers from shadowing restricted names
+    "no-shadow-restricted-names": 2,
+
+    // Enforce return statements in callbacks of array methods
+    "callback-return": 2,
+
+    // Require error handling in callbacks
+    "handle-callback-err": 2,
+
+    // Warn against string concatenation with __dirname and __filename
+    "no-path-concat": 1,
+
+    // Prefer using arrow functions for callbacks
+    "prefer-arrow-callback": 1,
+
+    // Return inside each then() to create readable and reusable Promise chains.
+    // Forces developers to return console logs and http calls in promises. 
+    "promise/always-return": 2,
+
+    //Enforces the use of catch() on un-returned promises
+    "promise/catch-or-return": 2,
+
+    // Warn against nested then() or catch() statements
+    "promise/no-nesting": 1
+  }
+}
diff --git a/firebase-functions/paddle-webhook/functions/.gitignore b/firebase-functions/paddle-webhook/functions/.gitignore
new file mode 100644
index 00000000..40b878db
--- /dev/null
+++ b/firebase-functions/paddle-webhook/functions/.gitignore
@@ -0,0 +1 @@
+node_modules/
\ No newline at end of file
diff --git a/firebase-functions/paddle-webhook/functions/index.js b/firebase-functions/paddle-webhook/functions/index.js
new file mode 100644
index 00000000..1109c4f0
--- /dev/null
+++ b/firebase-functions/paddle-webhook/functions/index.js
@@ -0,0 +1,57 @@
+const functions = require('firebase-functions');
+const admin = require('firebase-admin');
+
+admin.initializeApp(functions.config().firebase);
+
+const webhook = require('./webhook');
+const pubKey = functions.config().paddle.pub_key;
+
+exports.info = functions.https.onRequest((req, res) => {
+    res.send(`Hello from ${process.env.GCLOUD_PROJECT}!`);
+});
+
+exports.webhook = functions.https.onRequest((req, res) => {
+    if(req.body && req.body.p_signature) {
+        const result = webhook.validate(req.body, pubKey);
+        if(result) {
+            if(req.body.alert_name === 'subscription_created') {
+                const subscription = {
+                    cancel_url: req.body.cancel_url,
+                    checkout_id: req.body.checkout_id,
+                    currency: req.body.currency,
+                    email: req.body.email,
+                    event_time: req.body.event_time,
+                    marketing_consent: req.body.marketing_consent,
+                    next_bill_date: req.body.next_bill_date,
+                    passthrough: req.body.passthrough,
+                    quantity: req.body.quantity,
+                    status: req.body.status,
+                    subscription_id: req.body.subscription_id,
+                    subscription_plan_id: req.body.subscription_plan_id,
+                    unit_price: req.body.unit_price,
+                    update_url: req.body.update_url
+                };
+                console.log(subscription);
+
+                const db = admin.firestore();
+                db.collection('test_user_subscriptions')
+                    .doc(subscription.subscription_id)
+                    .set(subscription)
+                    .then(function() {
+                        console.log('created');
+                        res.send('Accepted');
+                    });
+                
+            } else {
+                console.warn(`unsupported alert ${req.body.alert_name}`);
+                res.send(`unsupported alert ${req.body.alert_name}`);
+            }
+
+            
+        } else {
+            res.send('Invalid signature');
+        }
+    } else {
+        res.send('Invaid request');
+    }
+});
\ No newline at end of file
diff --git a/firebase-functions/paddle-webhook/functions/package-lock.json b/firebase-functions/paddle-webhook/functions/package-lock.json
new file mode 100644
index 00000000..39302dcc
--- /dev/null
+++ b/firebase-functions/paddle-webhook/functions/package-lock.json
@@ -0,0 +1,3580 @@
+{
+  "name": "functions",
+  "requires": true,
+  "lockfileVersion": 1,
+  "dependencies": {
+    "@babel/code-frame": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.0.0.tgz",
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+      "dev": true,
+      "requires": {
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+      }
+    },
+    "@babel/highlight": {
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+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.0.0.tgz",
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+        "esutils": "^2.0.2",
+        "js-tokens": "^4.0.0"
+      }
+    },
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+      "resolved": "https://registry.npmjs.org/@firebase/app/-/app-0.3.8.tgz",
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+        "tslib": "1.9.0",
+        "xmlhttprequest": "1.8.0"
+      }
+    },
+    "@firebase/app-types": {
+      "version": "0.3.3",
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+    },
+    "@firebase/database": {
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+      "resolved": "https://registry.npmjs.org/@firebase/database/-/database-0.3.11.tgz",
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+    },
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+      "version": "0.2.6",
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+      "integrity": "sha512-xhQdQt/9eoX7CmCvWoe2YERMf/pIw0DgO0PicVTWJba+EAGdebHcpMeXRWvtsc7Wdj5Qh22hGLk1C+gz/nP5CQ==",
+      "requires": {
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+    },
+    "@google-cloud/common": {
+      "version": "0.30.2",
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+      "optional": true,
+      "requires": {
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+      "optional": true,
+      "requires": {
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+        "deep-equal": "^1.0.1",
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+        "through2": "^3.0.0"
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+    },
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+}
diff --git a/firebase-functions/paddle-webhook/functions/package.json b/firebase-functions/paddle-webhook/functions/package.json
new file mode 100644
index 00000000..95524ac9
--- /dev/null
+++ b/firebase-functions/paddle-webhook/functions/package.json
@@ -0,0 +1,23 @@
+{
+  "name": "functions",
+  "description": "Cloud Functions for Firebase",
+  "scripts": {
+    "lint": "eslint .",
+    "serve": "firebase serve --only functions",
+    "shell": "firebase functions:shell",
+    "start": "npm run shell",
+    "deploy": "firebase deploy --only functions",
+    "logs": "firebase functions:log"
+  },
+  "dependencies": {
+    "crypto": "^1.0.1",
+    "firebase-admin": "~7.0.0",
+    "firebase-functions": "^2.2.0",
+    "php-serialize": "^2.1.0"
+  },
+  "devDependencies": {
+    "eslint": "^5.12.0",
+    "eslint-plugin-promise": "^4.0.1"
+  },
+  "private": true
+}
diff --git a/firebase-functions/paddle-webhook/functions/webhook.js b/firebase-functions/paddle-webhook/functions/webhook.js
new file mode 100644
index 00000000..9e5d4401
--- /dev/null
+++ b/firebase-functions/paddle-webhook/functions/webhook.js
@@ -0,0 +1,38 @@
+const crypto = require('crypto');
+const Serialize = require('php-serialize');
+
+function ksort(obj){
+    let keys = Object.keys(obj).sort();
+    let sortedObj = {};
+  
+    for (var i in keys) {
+      sortedObj[keys[i]] = obj[keys[i]];
+    }
+  
+    return sortedObj;
+  }
+
+function validateWebhook(jsonObj, pubKey) {
+    const mySig = Buffer.from(jsonObj.p_signature, 'base64');
+    delete jsonObj.p_signature;
+    // Need to serialize array and assign to data object
+    jsonObj = ksort(jsonObj);
+    for (var property in jsonObj) {
+        if (jsonObj.hasOwnProperty(property) && (typeof jsonObj[property]) !== "string") {
+            if (Array.isArray(jsonObj[property])) { // is it an array
+                jsonObj[property] = jsonObj[property].toString();
+            } else { //if its not an array and not a string, then it is a JSON obj
+                jsonObj[property] = JSON.stringify(jsonObj[property]);
+            }
+        }
+    }
+    const serialized = Serialize.serialize(jsonObj);
+    // End serialize data object
+    const verifier = crypto.createVerify('sha1');
+    verifier.update(serialized);
+    verifier.end();
+
+    return verifier.verify(pubKey, mySig);
+}
+
+exports.validate = validateWebhook;
\ No newline at end of file