Could header mutator serialize nested values to json instead of go map?

[nmapx]

Technically it could be possible to use eg. X-User header containing all of the user profile info as JSON (just like it's being stored in metadata_public in Kratos) instead of passing each value in a separate header which might be hard to maintain. Currently if I use limited print or printf "%s" func on a nested object (in oathkeeper config), it is being serialized to Go map (as a string) which kinda works (i can see the values) but can't make it JSON formatted. So I was wondering - would you be open for such a possibility? If this kind of feature is not in your backlog I could possibly make a contribution.

[nmapx]

@vinckr Could you please have a look? I asked it couple months ago and found a workaround already but still it's not ideal and I'm open for any improvements in that matter.

[vinckr]

Hello @nmapx
Apologies for the late answer.
To be honest I am not working on Oathkeeper directly so I can't really say if this would be a good feature.
Can you maybe use the Feature Request template to create a bit more detailed feature request issue and then the core maintainers will take a look when they have time.