diff --git a/android/src/main/java/com/iterable/reactnative/RNIterableAPIModule.java b/android/src/main/java/com/iterable/reactnative/RNIterableAPIModule.java
index e73e96206..88b86aeee 100644
--- a/android/src/main/java/com/iterable/reactnative/RNIterableAPIModule.java
+++ b/android/src/main/java/com/iterable/reactnative/RNIterableAPIModule.java
@@ -148,16 +148,6 @@ public void trackEvent(String name, ReadableMap dataFields) {
     public void updateCart(ReadableArray items) {
         IterableLogger.v(TAG, "UpdateCart API");
 
-        JSONObject dataFieldsJson = null;
-
-        try {
-            if (dataFields != null) {
-                dataFieldsJson = Serialization.convertMapToJson(dataFields);
-            }
-        } catch (JSONException e) {
-            IterableLogger.e(TAG, "Failed converting JSON to object");
-        }
-
         IterableApi.getInstance().updateCart(Serialization.commerceItemsFromReadableArray(items));
     }
 
diff --git a/android/src/main/java/com/iterable/reactnative/Serialization.java b/android/src/main/java/com/iterable/reactnative/Serialization.java
index f8376f674..189c8fe0e 100644
--- a/android/src/main/java/com/iterable/reactnative/Serialization.java
+++ b/android/src/main/java/com/iterable/reactnative/Serialization.java
@@ -81,9 +81,9 @@ static List<CommerceItem> commerceItemsFromReadableArray(ReadableArray array) {
     }
 
     static CommerceItem commerceItemFromMap(JSONObject itemMap) throws JSONException {
-
         String[] categories = null;
         JSONArray categoriesArray = itemMap.optJSONArray("categories");
+
         if (categoriesArray != null) {
             for (int i = 0; i < categoriesArray.length(); i++) {
                 if (categories == null) {
@@ -92,6 +92,7 @@ static CommerceItem commerceItemFromMap(JSONObject itemMap) throws JSONException
                 categories[i] = categoriesArray.getString(i);
             }
         }
+        
         return new CommerceItem(itemMap.getString("id"),
                 itemMap.getString("name"),
                 itemMap.getDouble("price"),
@@ -100,7 +101,8 @@ static CommerceItem commerceItemFromMap(JSONObject itemMap) throws JSONException
                 itemMap.optString("description", null),
                 itemMap.optString("url", null),
                 itemMap.optString("imageUrl", null),
-                categories
+                categories,
+                itemMap.optJSONObject("dataFields")
         );
     }
 
diff --git a/ios/RNIterableAPI/Serialization.swift b/ios/RNIterableAPI/Serialization.swift
index 8f5cfac61..67b18ad2f 100644
--- a/ios/RNIterableAPI/Serialization.swift
+++ b/ios/RNIterableAPI/Serialization.swift
@@ -90,6 +90,7 @@ extension CommerceItem {
         let url = dict["url"] as? String
         let imageUrl = dict["imageUrl"] as? String
         let categories = dict["categories"] as? [String]
+        let dataFields = dict["dataFields"] as? [AnyHashable: Any]
         
         return CommerceItem(id: id,
                             name: name,
@@ -99,7 +100,8 @@ extension CommerceItem {
                             description: description,
                             url: url,
                             imageUrl: imageUrl,
-                            categories: categories)
+                            categories: categories,
+                            dataFields: dataFields)
     }
 }
 
diff --git a/ts/Iterable.ts b/ts/Iterable.ts
index ea6e6fc22..934ae323e 100644
--- a/ts/Iterable.ts
+++ b/ts/Iterable.ts
@@ -170,8 +170,9 @@ class IterableCommerceItem {
   url?: string
   imageUrl?: string
   categories?: Array<string>
+  dataFields?: any
 
-  constructor(id: string, name: string, price: number, quantity: number, sku?: string, description?: string, url?: string, imageUrl?: string, categories?: Array<string>) {
+  constructor(id: string, name: string, price: number, quantity: number, sku?: string, description?: string, url?: string, imageUrl?: string, categories?: Array<string>, dataFields?: any | undefined) {
     this.id = id
     this.name = name
     this.price = price
@@ -181,6 +182,7 @@ class IterableCommerceItem {
     this.url = url
     this.imageUrl = imageUrl
     this.categories = categories
+    this.dataFields = dataFields
   }
 }