anchor.diff:             "role": "user",          
              "state": "active",          
              "externalUserId": "",          
  -           "createdAt": "2016-12-09 12:21:45"   
  +           "createdAt": "2017-01-01T10:15:11.696Z"   
            }
           ]
   
  
positive.code:           "role": "user",          
            "state": "active",          
            "externalUserId": "",          
            "createdAt": "2016-12-09 12:21:45"   
          }
          
  
  
negative.code:           "role": "user",          
            "state": "active",          
            "externalUserId": "",          
            "createdAt": "2017-01-01T10:15:11.696Z"  
          }
  
  
  