{
  "manageEntity": {
    "action": "Save",
    "entityId": "1288155431",
    "entityType": "Track",
    "nonce": "0xace6a39c889f97704a1cda5e31414b6f5c53f609acf5254483e5f1717d417365",
    "signature": "0x16590c37448855f0ffefe7caa298bb3a9426d19fe171d0dff3870a11507988e62e4c67ceac785dcb9afb443a901163d56519a339cf91586eba4bf93ae0be80541c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}