User Instance
GET /api/users/cern-rodrigar/?format=api
{
"username": "cern-rodrigar",
"first_name": "Arturo",
"last_name": "Rodriguez Rodriguez",
"collections": [],
"visibility": 30
}GET /api/users/cern-rodrigar/?format=api
{
"username": "cern-rodrigar",
"first_name": "Arturo",
"last_name": "Rodriguez Rodriguez",
"collections": [],
"visibility": 30
}