Parse a file as a whole having key value pairs

I have file which looks like this. I want ship the whole file as an event because I want all the key value pairs (here delimiter is "=") of each file to be part of a single record in Elasticsearch. I am confused about how should I split the event/message and then pass it through the kv filter. Is it possible to split on new line and then send it to kv filter?

Any help regarding this is appreciated. Thanks

Use a multiline codec to consume the entire file as a single event, then use mutate+gsub to discard the headers, then a kv filter.

    mutate { gsub => [ "message", "-{82}
[^
]+ Information
-{82}
", "" ] }
kv { field_split => "
" value_split => "=" remove_field => [ "message" ] }