Fix emoji and sticker saving

src/api/inventory.js

@@ -1,4 +1,23 @@
 const inventoryReq = {
+    /**
+     * @param {{ inventoryId: string, userId: string }} params
+     * @returns {Promise<{json: any, params}>}
+     */
+    getUserInventoryItem(params) {
+        return window.API.call(
+            `user/${params.userId}/inventory/${params.inventoryId}`,
+            {
+                method: 'GET'
+            }
+        ).then((json) => {
+            const args = {
+                json,
+                params
+            };
+            return args;
+        });
+    },
+
     /**
      * @param {{ inventoryId: string }} params
      * @returns {Promise<{json: any, params}>}