{
  "manageEntity": {
    "action": "Save",
    "entityId": "1674773104",
    "entityType": "Track",
    "nonce": "0x3d6ea78c17c65b91d1429f602bb27810e3edac3c1a34005a9fc57bac980ffd47",
    "signature": "0xe645b7a644e54ca24e8a7a9531ac5efa8b844289ad8b7baeddc78f402d360a21491a6547a22215a9bd58ca35af857c437d21109e7a033f9537e14f4daf3e30651b",
    "signer": "0xB51aA2AC0CABdaDceA1A7997f09581AE59cE0679",
    "userId": "825209277"
  }
}