curl --request POST \
--url https://sandbox-api.payfonte.com/payments/v1/payments/direct-charge \
--header 'Content-Type: application/json' \
--header 'client-id: <api-key>' \
--header 'client-secret: <api-key>' \
--data '{
"provider": "airtel-smartcash-ng",
"amount": 100000,
"reference": "<string>",
"customerInput": {
"phoneNumber": "2347012345678"
},
"webhook": "https://example.com/webhook"
}'