{
  "manageEntity": {
    "action": "Save",
    "entityId": "635269707",
    "entityType": "Track",
    "nonce": "0xb9ef6eb8dce06ece4686ddcfa3853a43c94fd3dbe00d1f44d9f276e10d2e2a50",
    "signature": "0xf530e492a15d86ee2f251da92f2be6a0f3c967dec986cf52736eb0666b98b5a900727e2646a6b93a8d277e3cf9eb7085302f4bf6eec034c2e6fcfd3fffa5213f1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}