curl --location --request POST 'https://your-api-server.com' \
--header 'Content-Type: application/json' \
--data-raw '{
"externalUserId": "bca65c48-df49-4831-a7b2-de7903321581",
"cardId": "8c394557-ba48-4ab4-9349-84d396b4a7f7",
"merchantName": "Amazon",
"amount": 10,
"currency": "eur"
}'
{}