Http request method: POST
https://api.weixin.qq.com/product/coupon/get_list?access_token=xxxxxxxxx 

{
    "start_create_time": "2020-03-25 12:05:25",
    "end_create_time": "2020-04-25 12:05:25",
    "status": 2,
    "page": 1,
    "page_size": 10
}

{
    "errcode": 0,
    "errmsg": "ok",
    "coupons": 
    [
        {
            "coupon_id": 123,
            "type": 1,
            "status": 1,
            "create_time": "2020-05-30 00:00:00",
            "update_time": "2020-05-30 12:00:00",
            "coupon_info":
            {
                "name": "Dresses of 100-50,"
                "valid_info": 
                {
                    "valid_type": "COUPON_VALID_TYPE_TIME",  // An enumeration field See the following table for the meaning
                    "valid_day_num": 0                      //valid_It only makes sense when type = 2
                    "start_time": "2020-06-01 00:00:00"     //valid_It only makes sense when type = 1
                    "end_time": "2020-07-01 00:00:00"       //valid_It only makes sense when type = 1
                },
                "promote_info":
                {
                    "promote_type": "PROMOTE_TYPE_SHOP",       // An enumeration field See the following table for the meaning
                    "customize_channel": "xxxx" //Custom promotion channel specific content, promote_It only makes sense when type = 2
                },
                "discount_info": {
                    "discount_condition": {
                        "product_price " : 10000,
                        "product_ids": []
                    },
                    "discount_fee": 600
                }
            },
            "stock_info":
            {
                "issued_num": 100,
                "receive_num": 100,
                "used_num": 100
            }
        }
    ],
    "total_num": 10
}