https://developers.weixin.qq.com/doc/offiaccount/Intelligent_Interface/AI_Open_API.html
【请求参数】:media_id=ggkLIuZ4aWJRd81oenVCndPuacSw2qQqj5qr8x_tl2-SK1OBEym0wIzKBLHAcQtG
【响应数据】:/tmp/ggkLIuZ4aWJRd81oenVCndPuacSw2qQqj5qr8x_tl2-SK1OBEym0wIzKBLHAcQtG2477257613464603891.amr
【响应数据】:true
【响应数据】:{"result":"","is_end":true}