Missing event log fields?

[jregovic]

Is there something I might need to check when my event log queries return only returning the MachineName and Message fields?

When I query the System log, I only get results like:

2016-09-15 18:03:42,319 DEBUG zen.MicrosoftWindows: [
{ "EntryType": " ", "TimeGenerated": " ", "Source": " ", "InstanceId": " ", "Message": "The WinHTTP Web Proxy Auto-Discovery Service service entered the running state.", "UserName": " ", "MachineName": "host1.host.com", "EventID": " " }
]