Custom Obtain Auth Token
This is the default ObtainAuthToken class from drf returning
an addtitional user_id on token auth requests.
Input: 'email' and 'password'
Output: 'token', 'user_id', 'url', 'email'
GET /api/v1/api-token-auth/?format=api
{
"detail": "Method \"GET\" not allowed."
}