生成订单v2

curl --location '/v2/order/create' \
--header 'x-token: {{x-token}}' \
--header 'Content-Type: application/json' \
--data '{
    "cart_id": [
        "string"
    ],
    "mark": {
        "[mer_id]": "string"
    },
    "address_id": "string",
    "coupon": {
        "[mer_id]": {
            "store": 0,
            "product": [
                "string"
            ]
        }
    },
    "pay_type": "string"
}'