{
"manageEntity": {
"action": "Save",
"entityId": "1518260724",
"entityType": "Track",
"nonce": "1793019124913250674",
"signature": "0x966b63c796e5c0209686a5eaec218015e886b21d9d08117835adc389850445a05ef6cc1a322af3336309c9e5814245e3bca867aa9241db097fa2dd56b432f44c1b",
"signer": "0x1007e09532BE90331E035838A9E2E0700bB9741a",
"userId": "329513359"
}
}