curl --location --request POST 'https://kingdeexc.51kuaiding.com/shopapi/supply_collaboration.cart/selected' \
--header 'version: 1.1.1' \
--header 'Content-Type: application/json' \
--data-raw '{
"is_rpo": "string",
"user_id": "string",
"cart_id": "string",
"selected": "string"
}'