def update(self, notification_level):
data = values.of({'<STR_LIT>': notification_level, })<EOL>payload = self._version.update(<EOL>'<STR_LIT:POST>',<EOL>self._uri,<EOL>data=data,<EOL>)<EOL>return UserChannelInstance(<EOL>self._version,<EOL>payload,<EOL>service_sid=self._solution['<STR_LIT>'],<EOL>user_sid=self._solution['<STR_LIT>'],<EOL>channel_sid=self._solution['<STR_LIT>'],<EOL>)<EOL>
Update the UserChannelInstance

:param UserChannelInstance.NotificationLevel notification_level: The push notification level to assign to the User Channel

:returns: Updated UserChannelInstance
:rtype: twilio.rest.chat.v2.service.user.user_channel.UserChannelInstance