{
  "manageEntity": {
    "action": "Save",
    "entityId": "1686886917",
    "entityType": "Track",
    "nonce": "0x5b6ead42881b7ba44217d2e38e859ed03e9ed92097e3568660a4b8bc79dab202",
    "signature": "0x20c359bcd0c1cee26d52962d48ba7aa9a4dc46c512b1e2403d6f1317475cfb305c53f3e25048f0418dcd39265daaaca70acfb35246863faef2a16b8b4875377a1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}