code: def receive_verify_post(self, post_params):
          
          if isinstance(post_params,  dict):
              required_params = ['action', 'email', 'send_id', 'sig']
              if not self.check_for_valid_postback_actions(required_params, post_params):
                  return False
          else:
              return False
  
          if post_params['action'] != 'verify':
              return False
  
          sig = post_params['sig']
          post_params = post_params.copy()
          del post_params['sig']
  
          if sig != get_signature_hash(post_params, self.secret):
              return False
  
          send_response = self.get_send(post_params['send_id'])
  
          try:
              send_body = send_response.get_body()
              send_json = json.loads(send_body)
              if 'email' not in send_body:
                  return False
              if send_json['email'] != post_params['email']:
                  return False
          except ValueError:
              return False
  
          return True
docs: Returns true if the incoming request is an authenticated verify post.