{
  "manageEntity": {
    "action": "Save",
    "entityId": "832109389",
    "entityType": "Track",
    "nonce": "0x8b63f6bcdcb83d98deba40adbd0a864f4ceecf1c291a7559abfc88f7f63987dd",
    "signature": "0x653521b30e7723a6d27635aea7db5afdd15bc03d1e453e147c0721c3269960a63f1b2925a09d8ffb4a4ae92e00122f47e34e9ce0b1999092f17c6db236b7612f1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}