{
  "manageEntity": {
    "action": "Save",
    "entityId": "1053336571",
    "entityType": "Track",
    "nonce": "0xc04a5aae76103596db16122e78a003bfab4e4322da6af624cc3de615e841727f",
    "signature": "0xfc930b6af5308b7dd2588b76b9f7086c40d90f1c19729d644b4be3840710c9ad160770b7f1bd43020db1d971c90951a20ecb2185217c7b1ebb6e9413727162391b",
    "signer": "0xa0C10F709D3c5b2b5FecDEA05B821Ac58bF0c782",
    "userId": "641492277"
  }
}