new_contents: from django import template
  from settings_local import INTERCOM_SECRET_KEY
  
  import hmac, hashlib
  
  register = template.Library()
  
  @register.filter
  def intercom_sha_256(user_id):
      return hmac.new(INTERCOM_SECRET_KEY, user_id, digestmod=hashlib.sha256).hexdigest()
  
subject: Add intercom template tags.