{
  "manageEntity": {
    "action": "Save",
    "entityId": "2025411273",
    "entityType": "Track",
    "nonce": "0x51d16386c4bf49b562c5fd7a39f13ea3bfe902b98e63c9ae7b3e261bf0c2e4d2",
    "signature": "0x72a70b0d446203303045aa618db36a1ed2d38d85d27c3873ff4c80e6d9220fa36f4c0622c67e800eedf0ea975408ffa5bc1b6c54f8f27c405aa027c16d5066d71c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}