@HUSKA Luu I think you need to subscribe to the message events to get updates for edited or updated messages. The documentation from Azure does not include these events. But, as per slack documentation you can use these and check if the channel supports the same.
As per slack documentation:
If the message has been edited after posting it will include an edited property, including the user ID of the editor, and the timestamp the edit happened. The original text of the message is not available.
For deleted messages try subscribing to message_deleted