def update(self, role_sid=values.unset, attributes=values.unset,<EOL>friendly_name=values.unset):
return self._proxy.update(role_sid=role_sid, attributes=attributes, friendly_name=friendly_name, )<EOL>
Update the UserInstance

:param unicode role_sid: The SID id of the Role assigned to this user
:param unicode attributes: A valid JSON string that contains application-specific data
:param unicode friendly_name: A string to describe the resource

:returns: Updated UserInstance
:rtype: twilio.rest.chat.v2.service.user.UserInstance