User Instance
GET /api/users/248/?format=api
{
"username": "Turbine",
"gravatar": "//www.gravatar.com/avatar/5f06e5867c91de2d17a2a64d1707ce57?d=wavatar",
"has_key": true
}GET /api/users/248/?format=api
{
"username": "Turbine",
"gravatar": "//www.gravatar.com/avatar/5f06e5867c91de2d17a2a64d1707ce57?d=wavatar",
"has_key": true
}