curl --request POST \
--url https://api.example.com/v1/checkout-sessions/{sessionId}/select-plan \
--header 'Content-Type: application/json' \
--data '
{
"planRef": "<string>"
}
'curl --request POST \
--url https://api.example.com/v1/checkout-sessions/{sessionId}/select-plan \
--header 'Content-Type: application/json' \
--data '
{
"planRef": "<string>"
}
'