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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 mode_toggle(self, mode: str) -> bool: """Set mode to manual, auto or sleep"""

        head = helpers.req_headers(self.manager)
        body = helpers.req_body(self.manager, 'devicestatus')
        body['uuid'] = self.uuid
        if mode != body['mode'] and mode in ['sleep', 'auto', 'manual']:
            body['mode'] = mode
            if mode == 'manual':
                body['level'] = 1

            r, _ = helpers.call_api('/131airPurifier/v1/device/updateMode',
                                    'put', json=body, headers=head)

            if r is not None and helpers.check_response(r, 'airpur_status'):
                self.details['mode'] = mode
                return True

        return False