{
  "manageEntity": {
    "action": "Save",
    "entityId": "1167413288",
    "entityType": "Track",
    "nonce": "0x8f61cf1099c50412c64d81ff2eac8497b1797ebaa3e4aeeba5cd1f259150988f",
    "signature": "0x36b59c40ea00720f00a37f4c83f7449eb27b74140f2f0bbfd9c09002a715f43d53ad38becf834a39668fb6f983cbd4b74957935688ad080b71fb4e5fe7d629211b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}