curl --request GET \
  --url https://channels-service-alpha.fourvenues.com/custom-taxes \
  --header 'X-Api-Key: <api-key>'

{
  "data": [
    {
      "id": "1234567890",
      "name": "Sale Tax",
      "type": "tax",
      "calculation": {
        "type": "percentage",
        "value": 10
      },
      "apply_to": [],
      "description": "Sale Tax 10% of the ticket price"
    }
  ],
  "success": true
}