code: def subscribe(topic, protocol, endpoint, region=None, key=None, keyid=None, profile=None):
      '''
      Subscribe to a Topic.
  
      CLI example to delete a topic::
  
          salt myminion boto_sns.subscribe mytopic https https://www.example.com/sns-endpoint region=us-east-1
      '''
      conn = _get_conn(region=region, key=key, keyid=keyid, profile=profile)
      conn.subscribe(get_arn(topic, region, key, keyid, profile), protocol, endpoint)
      log.info('Subscribe %s %s to %s topic', protocol, endpoint, topic)
      try:
          del __context__[_subscriptions_cache_key(topic)]
      except KeyError:
          pass
      return Truf subscribe(topic, protocol, endpoint, region=None, key=None, keyid=None, profile=None):
      '''
      Subscribe to a Topic.
  
      CLI example to delete a topic::
  
          salt myminion boto_sns.subscribe mytopic https https://www.example.com/sns-endpoint region=us-east-1
      '''
      conn = _get_conn(region=region, key=key, keyid=keyid, profile=profile)
      conn.subscribe(get_arn(topic, region, key, keyid, profile), protocol, endpoint)
      log.info('Subscribe %s %s to %s topic', protocol, endpoint, topic)
      try:
          del __context__[_subscriptions_cache_key(topic)]
      except KeyError:
          pass
      return True
docs: Subscribe to a Topic.
  
      CLI example to delete a topic::
  
          salt myminion boto_sns.subscribe mytopic https https://www.example.com/sns-endpoint region=us-east-1