Joins user to another user's entourage. Requires user parameter and must be a POST. Returns user in the requested format whose id or username was provided in parameters.
http://whootin.com/api/v1/user/join_entourage.format (json | xml)
One of user_id or username are required.
|The ID of the user to join for. Helpful for disambiguating when a valid user ID is also a valid username.|
|The username of the user whose entourage to join for. Helpful for disambiguating when a valid username is also a user ID.|