syslog column definitions

[rogge+opnsense]

Will some one please point me to a resource with the column definitions for syslog-ng SyslogMessage?

Facility = local0
SeverityLevel = info

56,,,0,vmx1,match,block,in,6,0x00,0x2ac1f,1,udp,17,36,fe80::d952:2e68:a12d:54c9,ff02::fb,5353,5353,36

I can determine the interface (vmx1), action (match & block), direction (in), protocol (udp), and source ip (fe80::d952:2e68:a12d:54c9)

Can someone help me determine the other columns?


OPNsense Details:
OPNsense 20.1.7-amd64
FreeBSD 11.2-RELEASE-p20-HBSD
LibreSSL 3.0.2

thank you