{
"manageEntity": {
"action": "Save",
"entityId": "2006015534",
"entityType": "Track",
"nonce": "0xefaf4331bcaa4721903b994024e1dd1cb8bdddaaef63e43156e260d29de10a8e",
"signature": "0x43bd79b161f86eab095d5fb0e4eedfad5a4f50783fb3dd75d37a1bffdc9e4f5261758da46d1be2170094524800f22fcf1f5a1e3460d2520bc8e7eef650a609f11b",
"signer": "0xf954E35976C0aAaEC2968197F2a371Cc99E7C81A",
"userId": "102143"
}
}