{
"manageEntity": {
"action": "Save",
"entityId": "215077745",
"entityType": "Track",
"nonce": "0xffefa31a8601565da8d889057b196b261f3697554a738621772aea8b8310f423",
"signature": "0x0fa0cea22d4c05df4014f4927f332d3efd5aa9a4ea7840aa2b01e91ed4564db358cc9aa2f95ccc57a321054fee4665858399fd2bf164b9b9898588f9789dec741c",
"signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
"userId": "714646433"
}
}