text: from django.contrib.auth import get_user_model
  from django.dispatch import receiver
  from django.db.models.signals import post_save, pre_save
  
  from core.models import Event, Organization, Person
  
  from ..models import Entry
  
  
  @receiver(pre_save, sender=Entry)
  def before_entry_save(sender, instance, **kwargs):
      if claims := instance.other_fields.get('claims', {}):
          if instance.event is None:
              if event_slug := claims.get('event'):
                  instance.event = Event.objects.filter(slug=event_slug).first()
          if instance.organization is None:
              if organization_slug := claims.get('organization'):
                  instance.organization = Organization.objects.filter(slug=organization_slug).first()
  
      if instance.organization is None and instance.event is not None:
          instance.organization = instance.event.organization
  
      if instance.person is None:
          if username := instance.other_fields.get('user'):
              if user := get_user_model().objects.filter(username=username).first():
                  try:
                      instance.person = user.person
                  except Person.DoesNotExist:
                      pass
  
  
  @receiver(post_save, sender=Entry)
  def on_entry_created(sender, instance, created, **kwargs):
      if not created:
          return
  
      instance.send_updates()
  