智能拓扑请求体

{
    "model": "tencent/hunyuan-3d-reduce-face",
    "file_3d": {
        "type": "OBJ",
        "url": "https://example.com/model.obj",
        "preview_image_url": "https://example.com/preview.jpg"
    },
    "polygon_type": "triangle",
    "face_level": "high"
}