<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def modifyContacts(self, contactids, paused):
 """Modifies a list of contacts. Provide comma separated list of contact ids and desired paused state Returns status message """


        response = self.request("PUT", "notification_contacts", {'contactids': contactids,
                                                    'paused': paused})
        return response.json()['message']