anchor.diff:  |token|string, required| the user secret/token for this network
   
   ### Response description
  +
  +**Note:** If a new user was created, the response code is `201`, `200` otherwise.
   
   The response is a JSON object.
   
  
positive.code:         
              { 
                  "network": "facebook",
                  "facebookid" : "1000001010",
                  "facebooktoken" : "CAAIoRjU6xxYBAAy5Ymu...7XAehrcVQBUOG7oBVNatEUZD"
              }
  
  + Response 200 (application/json)
  
          {
              "user_id" : "dfg54g2dfg54sqdf32wfds54fqdf",
              "user_secret" : "dfg54g2dfg54sqdf32wfds54fqdf",
              "profile" : {},
              "vfs" : {},
              "gamervfs" : {}
          }
          
  
  + Request (application/json)
  
      + Headers
  
negative.code:         
              { 
                  "network": "facebook",
                  "id" : "1000001010",
                  "token" : "CAAIoRjU6xxYBAAy5Ymu...7XAehrcVQBUOG7oBVNatEUZD"
              }
  
  + Response 401 (application/json)
  