Parse the field "okta.target" with filebeat module

Right now, all other fields are parsed correctly. But for "okta.target" field, that still shows up as JSON and there are 4 sub-fields that you can't parse normally with mappings. Working with support to figure out how I can do this as-is but would be nice if that field was parsed out with filebeat module.

You should be able to see this with ANY okta log but I have attached 2 screenshots with field values obfuscated (they are all strings).