{
"manageEntity": {
"action": "Save",
"entityId": "1800075745",
"entityType": "Track",
"nonce": "1792940726210449031",
"signature": "0x3dcf9c1f0056e4d07ff8182d5685fb1d401cd904c77b560045c56e1123f67ddc143d5bb83d0bd5f044e30d576b7e09c20e65df6f10ae280b55e2aee318a585241b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}