curl --request POST \
  --url https://gateway.dev.waypay.live/Gateway/v1/Refunds/550e8400-e29b-41d4-a716-446655440000/cancel \
  --header 'SWICH-API-Key: pk_test_xxxxxxxx'

const response = await fetch(
  'https://gateway.dev.waypay.live/Gateway/v1/Refunds/550e8400-e29b-41d4-a716-446655440000/cancel',
  {
    method: 'POST',
    headers: {
      'SWICH-API-Key': 'pk_test_xxxxxxxx'
    }
  }
);

const data = await response.json();

import requests

response = requests.post(
    'https://gateway.dev.waypay.live/Gateway/v1/Refunds/550e8400-e29b-41d4-a716-446655440000/cancel',
    headers={
        'SWICH-API-Key': 'pk_test_xxxxxxxx'
    }
)

true

false