Gives a user access to a Project.
Supply the API Key in the HTTP-Header
The default media type is application/hal+json. Use application/json for pure data results.
application/json, application/hal+json, application/xml, text/xml, text/csv The Id of the User
24^[a-z0-9]{24}$24^[a-z0-9]{24}$The project is now accessible for the user.