Send GELF log messages to Syslog-NG server

Hi people, a Graylog server is sending GELF log messages to my Syslog-NG
server listening on the UDP/514 port.

But when I was reading the message, I noticed it's in binary format.
Maybe syslog-ng service converts GELF to binary, because the log is
not in syslog format.

Is it possible to make Syslog-NG listen on the UDP/12201 port for
incoming GELF messages, in addition to UDP/514 syslog port ?

Or what can I do to accept GELF messages in the Syslog-NG server and
then read them in ASCII format ?

Thanks a lot!
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