{
  "manageEntity": {
    "action": "Save",
    "entityId": "265677108",
    "entityType": "Track",
    "nonce": "0xd47c4ae4e09def241f502bcce1ff37bdc24ab2bf2ef19510cc242ec58064bed5",
    "signature": "0x852f662d894b0f89711170a756c6594b87f8d3607017a77b52566087054b8b511ed9cfdba631e9ff6d8e4c2f69035292f40c29da0f7881fb1ff000394d90e9fe1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}