fpm output as JSON instead ruby hash?

[MarcusCaepio]

Hi all,
very new to fpm, doing my first steps. I noticed, that the ouput of a successful run is printed in a ruby hash(?).

As I am very unfamliar with ruby, an output in JSON format would help me a lot, to do a few more things in GitHub Actions after building.
Is there a way to change the output format? Could not find any hind in the docs.

Thanks a lot,
Marcus