{
"manageEntity": {
"action": "Save",
"entityId": "228409368",
"entityType": "Track",
"nonce": "0xfc2fd8fd0c93424343fdf7d4b97454cfa70df2aa2c0a8f5764808ac33a0f6fb9",
"signature": "0xffe1adb812bc1bcf0ca255f5937710d59a57f09f837b9be88f5fa05a980caa1000769767b7a0fd8b5ce1406651ba5e8711ae5a246c0fa9c675c41201ed5cf2ef1b",
"signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
"userId": "35251"
}
}