old_contents: from django.contrib.auth.models import AbstractUser
  from django.db import models
  
  
  class User(AbstractUser):
  
      created_at = models.DateTimeField(auto_now_add=True)
      updated_at = models.DateTimeField(auto_now=True)
  
      receive_email_notifications = models.BooleanField(
          default=True,
      )
  
new_contents: from django.contrib.auth.models import AbstractUser
  from django.db import models
  
  
  class User(AbstractUser):
  
      created_at = models.DateTimeField(auto_now_add=True)
      updated_at = models.DateTimeField(auto_now=True)
  
      email_notification = models.BooleanField(
          default=True,
      )
  
subject: update User model: rename email_notification field