OT, but what do you use to validate JSON posts without DRF? We mangled django form fields to validate a list of ids, but can I use forms to validate nested JSON

OT, but what do you use to validate JSON posts without DRF? We mangled django form fields to validate a list of ids, but can I use forms to validate nested JSON? I now use Marshmallow for that use case but would love to stick with Django forms.