数据类型：Coupon
{
"coupon_id": "NOHF08938",
"coupon_name": "双十一限时购",
"coupon_count": 1,
"begin_time": 1596358039000,
"expire_time": 1616358039000,
"coupon_type": "discount",
"coupon_rate": 0.85,
"coupon_threshold": "10",
"cash_back_amount": {
"currency": "CNY",
"amount_local": 68,
"amount_usd": 10,
"amount_cny": 6.8
}
}