图片编辑（Nano-banana 支持比例）

curl --location 'https://api.147ai.cn/v1beta/models/:generateContent' \
--header 'Authorization: sk-' \
--header 'Content-Type: application/json' \
--data '{
    "contents": [
        {
            "role": "user",
            "parts": [
                {
                    "inlineData": {
                        "mimeType": "image/png",
                        "data": "图片的base64数据，目前只支持base64"
                    }
                },
                {
                    "text": "将车的颜色变为黑色，天空的颜色变为白色"
                }
            ]
        }
    ],
    "generationConfig": {
        "responseModalities": [
            "IMAGE"
        ],
        "imageConfig": {
            "aspectRatio": "16:9",
            "imageSize": "2K"
        }
    }
}'