def update(self, notification_level):
        """
        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
        """
        data = values.of({'NotificationLevel': notification_level, })

        payload = self._version.update(
            'POST',
            self._uri,
            data=data,
        )

        return UserChannelInstance(
            self._version,
            payload,
            service_sid=self._solution['service_sid'],
            user_sid=self._solution['user_sid'],
            channel_sid=self._solution['channel_sid'],
        )
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