{
  "manageEntity": {
    "action": "Save",
    "entityId": "2090337481",
    "entityType": "Track",
    "nonce": "0x06f5c8ccacecc339f8411e568df5fc998bf1f5839e4cb2e4ffc33e913f4750a3",
    "signature": "0x83f45dbdbf8b197e35cc755575539f8ce74f193bbd002ac6a5c9b4eaa370ecae7f61cfa2fcbe2bacd320e8e9ae475d2b51dd9cb46481ad845c989cf0ba15eee61b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}