How to populate user profile with django-allauth provider information?

I'm using django-allauth for my authentication system. I need that when the user sign in, the profile module get populated with the provider info (in my case facebook).

I'm trying to use the pre_social_login signal, but I just don't know how to retrieve the data from the provider auth

from django.dispatch import receiver
from allauth.socialaccount.signals import pre_social_login

@receiver(pre_social_login)

def populate_profile(sender, **kwargs):
    u = UserProfile( >>FACEBOOK_DATA<< )
    u.save()

Thanks!!!