add additional data to be used when notification is clicked

lib/pushnotificationsservice.js

@@ -122,7 +122,8 @@ PushNotificationsService.prototype._sendPushNotifications = function(notificatio
             opts.android = {
               "data": {
                 "title": content.plain.subject,
-                "message": content.plain.body
+                "message": content.plain.body,
+                "walletId": notification.walletId,
               }
             };