Simple Modification to Angular image editor

I have a licensed copy of this image editor [login to view URL] I also have source for the editor. What i want to do is append a Comments tag to the editor so when using a tool such as the shapes or line drawing tool the user can also add a text comment. (please see attached image for concept) As the editor uses json objects it should be straight forward to attach comments to each annotated shape/tool. The Comments will be sent to an api endpoint in laravel (onEvent Listener/Channel) Effectively each comment should act as a private chat block for that particular annotation So workflow should be User chooses a shape or line tool from the editor draws the shape adds a comment which will then get sent to api endpoint and saved to the json object in the shape. Then if someone else comes along later they can add addtional comments to that shape (there should be a small chat bubble on each shape which will appear if there is comments on the shape