nest inconsistent data under data key

app/decorators/notification_decorator.rb

@@ -8,35 +8,37 @@ class NotificationDecorator
         is_read: receipt.is_read,
         created_at: notification.created_at,
         actor: notification.sender,
+        data: {
           object: notification.notified_object
         }
+      }
 
       case notification.notification_code
         when MAP_ACCESS_APPROVED, MAP_ACCESS_REQUEST, MAP_INVITE_TO_EDIT
           map = notification.notified_object&.map
-        result[:map] = {
+          result[:data][:map] = {
             id: map&.id,
             name: map&.name
           }
         when TOPIC_ADDED_TO_MAP
           topic = notification.notified_object&.eventable
           map = notification.notified_object&.map
-        result[:topic] = {
+          result[:data][:topic] = {
             id: topic&.id,
             name: topic&.name
           }
-        result[:map] = {
+          result[:data][:map] = {
             id: map&.id,
             name: map&.name
           }
         when TOPIC_CONNECTED_1, TOPIC_CONNECTED_2
           topic1 = notification.notified_object&.topic1
           topic2 = notification.notified_object&.topic2
-        result[:topic1] = {
+          result[:data][:topic1] = {
             id: topic1&.id,
             name: topic1&.name
           }
-        resul[:topic2] = {
+          resul[:data][:topic2] = {
             id: topic2&.id,
             name: topic2&.name
           }