{
  "manageEntity": {
    "action": "Save",
    "entityId": "2081308629",
    "entityType": "Track",
    "nonce": "0x35f62673bbc7e3005058e4e878998a7dc56438e65b62a8cad9520c877e05abbd",
    "signature": "0xf587ad33457c330d05a1aee50b402694b397a4c83640ce9421dd9156dc5a9e1c4dde8dfd14eae923a5300daf087bcbc02a6e7807851d00495df0e0da3c558c831c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}