{
  "manageEntity": {
    "action": "Save",
    "entityId": "329327",
    "entityType": "Track",
    "nonce": "0x0ff08e2cc6e3e4df2c1eb23644da9e2ad39dfdac4ead1a907055728a0550aa6c",
    "signature": "0x878b706cee898ac3524a962883927f86ebe9a56676e0d07eee8fdcce334260a65fb7eb9c50d93e688ac43ba7f1af42ab7e70db75105e727711e53cca1fc128eb1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}