{
  "manageEntity": {
    "action": "Save",
    "entityId": "882545001",
    "entityType": "Track",
    "nonce": "0x2a35c8ffa2e8cf7eb0aefce0f032301b0bf8bdcf230b4508098dd16804c72db9",
    "signature": "0xd91cfa8ea3d0b5e5c42e1b28c852d68cab951bc0d7a62e12793a3ba7d0b1e17f3c5160cb009e90ee0da6cedcb159b9134e78635c19a759ff6110a10d11a64ca81c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}