查询自定义主体（单个新版本）
接口: GET https://4zapi.com/kling/v1/general/advanced-custom-elements/{task_id}
参数
task_id(path, string, 必填): 异步任务 IDContent-Type(header, string): 请求体 Content-Type，一般为 application/jsonAuthorization(header, string): Bearer API Key
接口: GET https://4zapi.com/kling/v1/general/advanced-custom-elements/{task_id}
task_id (path, string, 必填): 异步任务 IDContent-Type (header, string): 请求体 Content-Type，一般为 application/jsonAuthorization (header, string): Bearer API Key