User Instance
GET /api/users/230/?format=api
{
"username": "Mr_sympa",
"gravatar": "//www.gravatar.com/avatar/f79a9ea3f4372972c7fa6ef176fc50be?d=wavatar",
"has_key": false
}GET /api/users/230/?format=api
{
"username": "Mr_sympa",
"gravatar": "//www.gravatar.com/avatar/f79a9ea3f4372972c7fa6ef176fc50be?d=wavatar",
"has_key": false
}