POST endpoints response improvement

To facilitate scalable API integrations we have improved the response of our POST endpoints.

Before:
Prior to this improvement the response for successful POST requests was only the "uid" of the new entity.

Now:
After this improvement the POST endpoints will return all the information for the entity.

This change has been done to limit the needed requests in POST flows, by returning all the information on the entity, this way any information added automatically by the system logic, can be obtained from the response instead of having send a GET request for entity.