code: def request_motion_detection_enable(blink, network, camera_id):
      
      url = "{}/network/{}/camera/{}/enable".format(blink.urls.base_url,
                                                    network,
                                                    camera_id)
      return http_post(blink, url)
docs: Enable motion detection for a camera.
  
      :param blink: Blink instance.
      :param network: Sync module network id.
      :param camera_id: Camera ID of camera to enable.