diff --git a/src/Particle.js b/src/Particle.js
index 2d8fcac..4f516a7 100644
--- a/src/Particle.js
+++ b/src/Particle.js
@@ -2485,17 +2485,17 @@ class Particle {
      * @param {string} [options.org]       The Organization ID or slug. If not provided, the request will go to your sandbox account.
      * @param {string} options.ledgerName  Ledger name.
      * @param {string} options.scopeValue  Scope value.
-     * @param {object} options.data        The data to set to the instance
+     * @param {object} options.instance    The instance with the data
      * @param {Object} [options.headers]   Key/Value pairs like `{ 'X-FOO': 'foo', X-BAR: 'bar' }` to send as headers.
      * @param {Object} [options.context]   Request context.
      *
      * @returns {Promise<RequestResponse>} A promise that resolves to the updated ledger instance data.
      */
-    setLedgerInstance({ auth, org, ledgerName, scopeValue, data, headers, context }) {
+    setLedgerInstance({ auth, org, ledgerName, scopeValue, instance, headers, context }) {
         return this.put({
             uri: this._namespacedPath(org, `ledgers/${ledgerName}/instances/${scopeValue}`),
             auth,
-            data: { data },
+            data: { instance },
             headers,
             context
         });
diff --git a/test/Particle.spec.js b/test/Particle.spec.js
index 07dbbd4..ae324da 100644
--- a/test/Particle.spec.js
+++ b/test/Particle.spec.js
@@ -142,7 +142,10 @@ const props = {
         description: 'my ledger',
         direction: 'Downstream'
     },
-    scopeValue: '1234'
+    scopeValue: '1234',
+    instance: {
+        property: 'yes'
+    }
 };
 
 const product = 'ze-product-v1';
@@ -2869,8 +2872,8 @@ describe('ParticleAPI', () => {
                         uri: `/v1/orgs/${org}/ledgers/${props.ledgerName}/instances/${props.scopeValue}`,
                         auth: props.auth,
                         data: {
-                            data: {
-                                sentient: true
+                            instance: {
+                                property: 'yes'
                             }
                         }
                     });