{
  "manageEntity": {
    "action": "Save",
    "entityId": "1111201194",
    "entityType": "Track",
    "nonce": "0x17721deb0b97da5099491ac23ffe8c08a6739e5e7c4d588f3cb59e1dc2f8ebb2",
    "signature": "0x8cb4819b51d4acd7461ce1598436e8b1a1ec8a165e1883a089ce0775e2c72c085121669c84b50d2682196c6b7f4c240e9b09ced4e7e8afdf36c5d455611183381c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}