LegacyTaskResponse

{
    "code": "success",
    "message": "string",
    "data": {
        "task_id": "string",
        "status": "NOT_START",
        "progress": "100%",
        "result_url": "http://example.com",
        "fail_reason": "string",
        "created_at": 0,
        "updated_at": 0,
        "usage": {
            "completion_tokens": 0,
            "total_tokens": 0,
            "property1": "string",
            "property2": "string"
        },
        "property1": "string",
        "property2": "string"
    }
}