docs: async def _set_subscriptions(self, subscriptions):
          """
          Set the subscriptions to a specific list of values
          """
  
          url, params = self._get_subscriptions_endpoint()
  
          data = {
              'object': 'page',
              'callback_url': self.webhook_url,
              'fields': ', '.join(subscriptions),
              'verify_token': self.verify_token,
          }
  
          headers = {
              'Content-Type': 'application/json',
          }
  
          post = self.session.post(
              url,
              params=params,
              data=ujson.dumps(data),
              headers=headers,
          )
  
          async with post as r:
              await self._handle_fb_response(r)
              data = await r.json()