code: async def on_raw_760(self, message):
          
          target, targetmeta = self._parse_user(message.params[0])
          key, _, value = message.params[1:4]
  
          if target not in self._pending['whois']:
              return
          if target in self.users:
              self._sync_user(target, targetmeta)
  
          self._whois_info[target].setdefault('metadata', {})
          self._whois_info[target]['metadata'][key] = value
docs: Metadata key/value for whois.