JSON_CustomData

JSON message about the conditions of setting custom card information

{
  "CustomData":{
    "address":1, 
/*optional, int, start address for writing. By default the data will be written from the start address*/
    "length":1, 
/*optional, int, length of the source data to be written, it is 0 by default, unit: byte*/
    "data":""
/*required, string, custom information encoded by Base64*/
  }
}