code: async def post(self):
          
          self.validate_ip()
  
          # context.update_state({'CALLER': WEBHOOK,
          #                       WEBHOOK_CONNECTION: True,
          #                       WEBHOOK_REQUEST: self.request})
  
          dispatcher = self.get_dispatcher()
          update = await self.parse_update(dispatcher.bot)
  
          results = await self.process_update(update)
          response = self.get_response(results)
  
          if response:
              web_response = response.get_web_response()
          else:
              web_response = web.Response(text='ok')
  
          if self.request.app.get('RETRY_AFTER', None):
              web_response.headers['Retry-After'] = self.request.app['RETRY_AFTER']
  
          return web_response
docs: Process POST request
  
          if one of handler returns instance of :class:`aiogram.dispatcher.webhook.BaseResponse` return it to webhook.
          Otherwise do nothing (return 'ok')
  
          :return: :class:`aiohttp.web.Response`