curl --location --request POST 'https://provisioning.sipay.com.tr/ccpayment/api/refund' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
"invoice_id": "Cs2Ghy621dsa42f1D2",
"amount": 125,
"app_id": "6d4a7e9374a76c15260fcc75e315b0b9",
"app_secret": "b46a67571aa1e7ef5641dc3fa6f1712a",
"merchant_key": "$2y$10$HmRgYosneqcwHj.UH7upGuyCZqpQ1ITgSMj9Vvxn.t6f.Vdf2SQFO",
"hash_key": "661ebbf2acc9d8bc:cb27:47tnM4SnmuVWRq9YMaHo2npFjXr7Nfe04poc_ri3g_R1NylhHZcj0Zu3Eul",
"refund_transaction_id": "",
"refund_web_hook_key": "string",
"app_lang": "en"
}'