How to extract data into separate fields (from nested JSON, extracting additional fields using spath)?

[alexsok]

I have this data coming in:

{"endpointType":"MAC","appName":"Tracker","endpointId":"1d11dd05-a8a9-11e9-a74b-873869538d14","ip":"192.168.41.1","endpointName":"tess-mbp.lan","timestampUTC":"2020-05-27T17:07:49Z","userName":"john","type":"FileSystemObserver","hostname":"test.com","userItemId":"rm-71a7812d-9444-11e8-8e37-8b2186626e5a","clientIp":"11.212.222.240","host":"dev.test.com:192.168.48.5","userEmail":"john@test.com","details":"{\"message\":\"{\\\"type\\\":\\\"File\\\", \\\"action\\\":\\\"Renamed\\\", \\\"timestamp\\\":\\\"1590599269\\\", \\\"path\\\":\\\"/Users/john/Library/Application Support/Google/Chrome/Default/Service Worker/CacheStorage/eadf114e35641d8a14aa9648d8e1c01b4b3bb3f0/index.txt\\\", \\\"sysinfo\\\":\\\"{\\\"ItemRenamed\\\",\\\"ItemIsFile\\\"}\\\"}\"}","authType":"MEMBER_ENDPOINT","requestSignature":"POST_/v3/report","epochTime":"1590599269","user-agent":"RR Endpoint/ag-2.10.1.797 (Darwin; 19.4.0; x86_64; tests-mbp.lan; 78:4f:41:7e:e1:06)"}

Data from details is not getting extracted. I need to get all data from details in separate fields, like:

type: File
action: Renamed
path: Users/john.........
sysinfo:
ItemRenamed:

If someone could help, it would be very appreciated.

[to4kawa · Accepted solution]

your search
| table details
| spath input=details
| rex field=message "sysinfo\":\"(?<sysinfos>.*})\""
| spath input=message
| rename sysinfos as sysinfo