{
  "manageEntity": {
    "action": "Save",
    "entityId": "1181974704",
    "entityType": "Track",
    "nonce": "0x14279a0e07681e58fb3b505a53fe7c5c231b8906a02d3c2e76e2fe6fd3728b1f",
    "signature": "0xc31eb4d0f3680288e0c13ff4194997aaa747ecabfd7158ce660263e65f23b8904c2021c8fdb7ac185fe9d408d0907cd5f3a31acd30a2b9ebf9c80a87ae095bf11b",
    "signer": "0x2be0f08F6d992D6Ba1d55c9634D8B8fc25f9562a",
    "userId": "384670"
  }
}