message: Update test asset data
diff: "maxCapacity": 5000000,
  "smartMeterPrivateKey": "0x191c4b074672d9eda0ce576cfac79e44e320ffef5e3aadd55e000de57341d36c",
  "role": "producer",
  - "manufacturer": "string",
  - "model": "string",
  - "serial_number": "string",
  - "latitude": 0,
  - "longitude": 0,
  + "manufacturer": "",
  + "model": "",
  + "serial_number": "",
  + "latitude": 12.788956,
  + "longitude": 101.851193,
  "energy_unit": "wattHour",
  "is_accumulated": true
  }
  