{
  "manageEntity": {
    "action": "Save",
    "entityId": "161008643",
    "entityType": "Track",
    "nonce": "0x0ee96d985518b37120d0c4d3577bb757ba4273851e63894521505dd569948419",
    "signature": "0x30ad046fd04d94e6d402fadc4966b0b8a7f33887f6ffe990a7013556cf8602be259c945a20151a3134c5c2cbb7419732d6ed74f980edf7a126926d68d0b669b31c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}