User Instance
GET /api/users/274/?format=api
{
"username": "test test",
"gravatar": "//www.gravatar.com/avatar/79dfa36365fc090fce887de712c596c3?d=wavatar",
"has_key": false
}GET /api/users/274/?format=api
{
"username": "test test",
"gravatar": "//www.gravatar.com/avatar/79dfa36365fc090fce887de712c596c3?d=wavatar",
"has_key": false
}