anchor.diff:              "amount": 4200,
               "data": {
                   "k1": "v1"
  -            }
  +            },
  +            "token": "secret"
           }
   
   
  
positive.code:             "ref": "ABCD1234",
              "data": {
                  "k1": "v1"
              }
          }
  
  
  
negative.code:             "ref": "ABCD1234",
              "data": {
                  "k1": "v1"
              },
              "token": "secret"
          }
  
  
  