New payload uses an array for receipt info

src/model/NotificationPayload.php

@@ -80,7 +80,9 @@ class NotificationPayload
 
         $instance->latestReceipt = $request->input('unified_receipt.latest_receipt');
         if ($request->has('unified_receipt.latest_receipt_info')) {
-            $instance->latestReceiptInfo = Receipt::createFromArray($request->input('unified_receipt.latest_receipt_info'));
+            if (count($request->input('unified_receipt.latest_receipt_info')) > 0) {
+                $instance->latestReceiptInfo = Receipt::createFromArray($request->input('unified_receipt.latest_receipt_info')[0]);
+            }
         } else {
             $instance->latestReceiptInfo = null;
         }