无法使用REST将视频添加到magento

Question

我正在使用Magento 2.2.5，当我尝试使用REST上传视频时，只有图片被上传，而extension_attributes丢失了。

    {
        "entry": {
            "media_type": "external-video",
            "label": "Video1",
            "position": 0,
            "disabled": False,
            "types": [],
            "content": {
                "base64_encoded_data": encoded_image,
                "type": "image/jpeg",
                "name": "0.jpg"
            },
            "extension_attributes": {
                "video_content": {
                    "media_type": "external-video",
                    "video_provider": "youtube",
                    "video_url": "youtube_video_url",
                    "video_title": "Title",
                    "video_description": "Test",
                    "video_metadata": "Test"
                }
            }

        }
     }