{
"manageEntity": {
"action": "Save",
"entityId": "492651346",
"entityType": "Track",
"nonce": "1792755903779846632",
"signature": "0x3e94890f21575da463a7b056cdfb31ba2b9c7bb521082479984c7c5dbb878ccd29e062e3117652d27fa7348a2b6806b0fd5d115acb0d61fae3e1cc58ce7edeb81b",
"signer": "0x512F9723ECbDB6Dc537A671b3D2fb35CC68017a4",
"userId": "105562689"
}
}