code: def sign_up(self):
          
          self.log("Bot player signing up.")
          self.subscribe_to_quorum_channel()
          while True:
              url = (
                  "{host}/participant/{self.worker_id}/"
                  "{self.hit_id}/{self.assignment_id}/"
                  "debug?fingerprint_hash={hash}&recruiter=bots:{bot_name}".format(
                      host=self.host,
                      self=self,
                      hash=uuid.uuid4().hex,
                      bot_name=self.__class__.__name__,
                  )
              )
              try:
                  result = requests.post(url)
                  result.raise_for_status()
              except RequestException:
                  self.stochastic_sleep()
                  continue
  
              if result.json()["status"] == "error":
                  self.stochastic_sleep()
                  continue
  
              self.on_signup(result.json())
              return True
docs: Signs up a participant for the experiment.
  
          This is done using a POST request to the /participant/ endpoint.