anchor.diff:  
   + Response 422 (application/json)
   
  -        {"errors":{"name":["can't be blank"]]}}
  +        {
  +          "errors":{
  +            "name":[
  +              "can't be blank"
  +            ]
  +          }
  +        }
   
   + Response 403 (application/json)
   
  
positive.code: 
  + Response 422 (application/json)
  
          {"errors":{"name":["has already been taken"]}}
  
  
  ### Fetch tag information [GET]
  
  
negative.code: 
  + Response 422 (application/json)
  
          {
            "errors":{
              "value":[
                "can't be blank"
              ]
            }
          }
  
  
  ### Fetch Contribution information [GET]
  