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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 update(self, read, write, manage):
 """ Update the SyncListPermissionInstance :param bool read: Read access. :param bool write: Write access. :param bool manage: Manage access. :returns: Updated SyncListPermissionInstance :rtype: twilio.rest.sync.v1.service.sync_list.sync_list_permission.SyncListPermissionInstance """

        data = values.of({'Read': read, 'Write': write, 'Manage': manage, })

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

        return SyncListPermissionInstance(
            self._version,
            payload,
            service_sid=self._solution['service_sid'],
            list_sid=self._solution['list_sid'],
            identity=self._solution['identity'],
        )