anchor.diff:  
   + Request (application/json)
   
  -    + Headers
  -
  -            Authorization: Bearer Access-Token
  -
       + Body
   
               {
  
positive.code:     + Body
  
              {
                  "/profile"
              }
  
              /* or*/
  
              {
                  "/login"
              }
  
  + Response 500 (application/json)
  
negative.code:     + Body
  
              {
                  "redirect_to": "/social_login"
              }
  
              /* or*/
  
              {
                  "redirect_to": "/login"
              }
  
  + Response 500 (application/json)
  