Send test authorization request

Example request

{
  "transactionData": {
    "transactionAmount": {
      "amount": 3.14,
      "currency": "EUR"
    },
    "settlementAmount": {
      "amount": 3.14,
      "currency": "EUR"
    }
  },
  "merchantData": {
    "merchantCountry": "FIN",
    "merchantCategoryCode": "5734",
    "acquirerCountry": "FIN"
  }
}