{
  "manageEntity": {
    "action": "Save",
    "entityId": "111200",
    "entityType": "Track",
    "nonce": "0xcd649e9b1d313f7daeda4f74d6ade5e9806570dc0d07829a5ffc33f63e45d153",
    "signature": "0x88484e522680700a79a475b19bcfdfcf499464d69f7c8c11346e086d74cbb346187d0597a333daedd1e4adf362b9f155163c39d3ff3fb5d0bbf3fce78e2f919c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}