{
  "manageEntity": {
    "action": "Save",
    "entityId": "1101029",
    "entityType": "Track",
    "nonce": "0x64c59bdc5317d5532e5135e9eb6897b68f578128713dbd3cc86e0a9e5f4b363d",
    "signature": "0x0f36338a2f489eae08a33c54211f79e756ee0b3a436ac02d99e4c487b5cb0eef6c3056ff150a64df4b8634c85bad92a5a8f363418cbbae467335bf77fccf4ef11b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}