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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def users(self, params):
 """ This is a private API and requires whitelisting from Twitter. This endpoint will allow partners to add, update and remove users from a given tailored_audience_id. The endpoint will also accept multiple user identifier types per user as well. """

        resource = self.RESOURCE_USERS.format(account_id=self.account.id, id=self.id)
        headers = {'Content-Type': 'application/json'}
        response = Request(self.account.client,
                           'post',
                           resource,
                           headers=headers,
                           body=json.dumps(params)).perform()
        success_count = response.body['data']['success_count']
        total_count = response.body['data']['total_count']
        return (success_count, total_count)