{
  "manageEntity": {
    "action": "Save",
    "entityId": "1853900239",
    "entityType": "Track",
    "nonce": "0xe477861a72af6dc387c497c258ea2edb91f9c13a8f6b12fe78fa211bbe03c458",
    "signature": "0xc8613643c685caa7acfc8c69c0089ce7aade2b9461857733edce14cadbb9b9b9166d175c661020785e15cf66d5a03db60b8e183ade22c51d26f1db04c6ef85551c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}