curl --request GET \
  --url https://api.returnshelper.com/uat/public/api/HandlingFeeCalculationType/getAllHandlingFeeCalculationTypeList \
  --header 'x-rr-apikey: <api-key>' \
  --header 'x-rr-apitoken: <api-key>'

{
  "data": [
    {
      "handlingFeeCalculationType": "<string>",
      "handlingFeeCalculationTypeDescription": "<string>"
    }
  ]
}