JSON Composition for sending:

{
  *"apikey" : provided by TPL commercial/projects
  ,*"token" : provided by TPL commercial/projects
  ,*"email" : email authorized to use the service
}

Success return:
{
  "auth" : authorization key to be sent in other services,
  "id": internal identification code
}

Error return:
{
  "code" : integer 
}

Notes:
Code:
404: apikey/token not identified
500: client blocked
400: auth already in use (key valid for 1h)
402: invalid data received