How to save a model without sending a signal?

ModelName.objects.bulk_create([your object/objects])

also you can read more here django docs

It's a bit of a hack, but you can do something like this:

use a unique identifier with a filter and then use the update method of the queryset (which does not trigger the signals)

user_id = 142187
User.objects.filter(id=user_id).update(name='tom')