{
"productId": "string",
"productAttrValueId": "string",
"cartNum": 1
}curl --location --request POST '/api/front/cart/add' \
--header 'Content-Type: application/json' \
--data-raw '{
"productId": "string",
"productAttrValueId": "string",
"cartNum": 1
}'{
"code": 0,
"message": "",
"data": ""
}