{
  "manageEntity": {
    "action": "Save",
    "entityId": "1622938932",
    "entityType": "Track",
    "nonce": "0xd0e9d7121468116c99900f05f730fe1fbbc1fba5f045d4379479680b7bd6a850",
    "signature": "0x9d2e88b00f55e5736e8ab45b383680ef696c532e940c8ada0f0cb69f91765d227faa59cbedb2aa54c51cdb21202666aaec766ba9dbb4a7ac32346fea9c566d671c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}