User Instance
GET /api/users/116/?format=api
{
"username": "kochary",
"gravatar": "//www.gravatar.com/avatar/1b0dd372b14f2eff4efdab8625d61a86?d=wavatar",
"has_key": false
}GET /api/users/116/?format=api
{
"username": "kochary",
"gravatar": "//www.gravatar.com/avatar/1b0dd372b14f2eff4efdab8625d61a86?d=wavatar",
"has_key": false
}