User Instance
GET /api/users/142/?format=api
{
"username": "Renaud",
"gravatar": "//www.gravatar.com/avatar/3b6d997dc7f8ea34e61687fe10aa1457?d=wavatar",
"has_key": false
}GET /api/users/142/?format=api
{
"username": "Renaud",
"gravatar": "//www.gravatar.com/avatar/3b6d997dc7f8ea34e61687fe10aa1457?d=wavatar",
"has_key": false
}