{
  "manageEntity": {
    "action": "Save",
    "entityId": "1701475980",
    "entityType": "Track",
    "nonce": "0x25684cc91ed38092e8190ca8c824511eb810ae528ba6c385ae7cc41c8a4b9cd2",
    "signature": "0x3a1d80295728d4234770bc974a802faf8df4ee8923410a4c29e1ddbfd8cda58634a79d1f527bb6ecf0178b5d7c728ce4e61bb3c29631967cba28ee80949d45a01c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}