{
  "manageEntity": {
    "action": "Save",
    "entityId": "1310306759",
    "entityType": "Track",
    "nonce": "0xafb143cf27189748eca11916071b996e3003fb39f5836dbbf8a50d260446edaf",
    "signature": "0x59a46736c63cb429a6498c87b187ed3635f974a37e7fe59a5ba3a43a2f11892c05552155b2689e0b35854c76564e5bf417d7433bf992d27bcf0b4e5d2faf9b1e1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}