How to extend user model for Social_auth uisng pipeline?

I have successfully implemented the social_auth package for django and it is successfully populating the fields in postgres. I am trying to extend the user models so that i can add some additional data while creating the account by user. This is what i could come up with, till now.

I have almost tried all the available resources online available but are not very helpful in this case.

settings.py #pipeline

SOCIAL_AUTH_PIPELINE = (
'social_core.pipeline.social_auth.social_details',
'social_core.pipeline.social_auth.social_uid',
'social_core.pipeline.social_auth.auth_allowed',
'social_core.pipeline.social_auth.social_user',
'social_core.pipeline.user.create_user',
'django_social_app.pipeline.requestprofiledata',
'social_core.pipeline.social_auth.associate_user',
'social_core.pipeline.social_auth.load_extra_data',
'social_core.pipeline.user.user_details',
 )

models.py

from django.db import models
from django.contrib.auth.models import User, auth
# Create your models here.
class profiledata(models.Model):
    user = models.OneToOneField(User,on_delete=models.CASCADE)
    #first_name =models.CharField(max_length=120)
    #last_name =models.CharField(max_length=120)
    #email =models.CharField(max_length=120)
    registeredemail = models.CharField(max_length=120)
    mobile = models.CharField(max_length=10)
    instname =  models.CharField(max_length=10)
    idproof = models.FileField(upload_to='documents/')
    profiledatacomplete = models.BooleanField()

views.py

def getprofiledata(request):
    return render(request,'createCertificates/profile.html')

pipeline.py

from django.shortcuts import redirect
from .models import profiledata
#from socia.pipeline.partial import partial
from django_social_app import views
from social_core.pipeline.partial import partial

@partial
def requestprofiledata(strategy, details, user=None, is_new=False, *args, **kwargs):
    print(details)
    print(type(user))
    #print(user.first_name,"..............")
    #print(user.registeredemail)
    test = 0
    #if user and user.email and test != 0:
    if test == 1:
        return
    #elif is_new and not details.get('email'):
    else:
        registeredemail = strategy.request_data().get("registeredemail")
        #user['registeredemail'] = strategy.request_data().get("registeredemail")
        mobile = strategy.request_data().get("mobile")
        instname = strategy.request_data().get("instname")
        idproof = strategy.request_data().get("idproof")

        '''
        new_user = profiledata.objects.create(
            registeredemail=registeredemail,
            mobile=mobile,
            instname=instname,
            idproof=idproof
        )
        new_user.save()
        print('Profile saved')
        '''
        if registeredemail:
            print("found data")
            print("data",registeredemail,mobile,instname)
            print("user",user)
            print(".................................")
        else:
            return redirect('getprofiledata')