User Instance
GET /api/users/422/?format=api
{
"username": "San",
"gravatar": "//www.gravatar.com/avatar/5735760eb8f0674b495d5da365e90d67?d=wavatar",
"has_key": false
}GET /api/users/422/?format=api
{
"username": "San",
"gravatar": "//www.gravatar.com/avatar/5735760eb8f0674b495d5da365e90d67?d=wavatar",
"has_key": false
}