Hi, I have this type of input in nxlog.conf:

<Input udp>
    Module      im_udp
    Host        0.0.0.0
    Port        514
    Exec        parse_syslog(); to_json(); perl_call("process");
</Input>

My question is, how should I include that JSON output that I get from to_json() to my perl code? Should I write like this?:

my ( $event ) = @_;

Or it's only the output of parse_syslog_bsd() (as in example for xm_perl https://nxlog.co/documentation/nxlog-user-guide/xm_perl.html)? More generally, my question is how to include JSON output that i get from to_json() to perl code of xm_perl module?