{
  "manageEntity": {
    "action": "Save",
    "entityId": "1635870078",
    "entityType": "Track",
    "nonce": "0xcd7b711b2cbbdf00cf06816f5073ebabb2a8a0ca0e25ea2ce021f2d4e584afea",
    "signature": "0x30a090881ba733ccad8f10253ba7a1879034c8a701323c8bbd7b2effd15546b9462c5de99b11a89ef639382b21a8af7a035ee18a5fcd2ccb50e03eb8b325017d1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}