diff --git a/zerver/lib/actions.py b/zerver/lib/actions.py
index 00f3f62c7a..cbeab82363 100644
--- a/zerver/lib/actions.py
+++ b/zerver/lib/actions.py
@@ -1973,27 +1973,27 @@ def do_send_messages(
         else:
             user_list = list(user_ids)
 
-        users: List[Dict[str, Union[int, List[str], bool]]] = []
+        user_data_objects: List[UserMessageNotificationsData] = []
         for user_id in user_list:
             flags = user_flags.get(user_id, [])
             wildcard_mention_notify = (
                 user_id in send_request.wildcard_mention_user_ids and "wildcard_mentioned" in flags
             )
-            users.append(
-                asdict(
-                    UserMessageNotificationsData(
-                        id=user_id,
-                        flags=flags,
-                        mentioned=("mentioned" in flags),
-                        online_push_enabled=(user_id in send_request.online_push_user_ids),
-                        stream_push_notify=(user_id in send_request.stream_push_user_ids),
-                        stream_email_notify=(user_id in send_request.stream_email_user_ids),
-                        wildcard_mention_notify=wildcard_mention_notify,
-                        sender_is_muted=(user_id in send_request.muted_sender_user_ids),
-                    )
+            user_data_objects.append(
+                UserMessageNotificationsData(
+                    id=user_id,
+                    flags=flags,
+                    mentioned=("mentioned" in flags),
+                    online_push_enabled=(user_id in send_request.online_push_user_ids),
+                    stream_push_notify=(user_id in send_request.stream_push_user_ids),
+                    stream_email_notify=(user_id in send_request.stream_email_user_ids),
+                    wildcard_mention_notify=wildcard_mention_notify,
+                    sender_is_muted=(user_id in send_request.muted_sender_user_ids),
                 )
             )
 
+        users = [asdict(user_data_object) for user_data_object in user_data_objects]
+
         if send_request.message.is_stream_message():
             # Note: This is where authorization for single-stream
             # get_updates happens! We only attach stream data to the