Parse nested json

Elastic Stack Logstash
8

@magnusbaeck, I found this earlier post of yours (Help parsing nested JSON with dynamic top key) and tried to use this but somehow it is not working. This is the updated configuration

input {
stdin {}
}

filter {
ruby {
code => "
event.to_hash.clone.each_value{|v|
if v.is_a? Hash
v.each_pair{|k,v|
print event[k] = v
}
end
}
"
}
}
output {
stdout { codec => rubydebug }
}