Issue Summary

Currently it's possible to Create object / Edit object  using REST API call to upload Avatar. For this to work, you need to know Avatar UUID. 

We don't have any public API endpoints to get Avatar UUID from existing objects. 

Only options currently is to use the kb article:

• You need to upload the avatar first by specifying a UUID that you will generate on your own. When an avatar is uploaded successfully, the response returned will contain the server UUID.
• Then you use this server UUID with the Create/Edit object REST API which will create/update the object successfully with the uploaded avatar.

This very useful if we wanted to copy avatar from existing objects to another one. 

Suggestion: 

Provide Avatar UUID within the Get object endpoint or a new endpoint to retrieve Avatar UUID from existing objects