curl --request POST \
  --url 'https://api.{{tenant}}.ext-uat1-sandbox.mycore.enfuce.com/processor/v1/3ds/oob/challenge/initiate' \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "authenticationId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "challengeId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "cardholder": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "customerNumber": "<string>"
  },
  "card": {
    "id": "b7e2a1d4-3f8c-4e29-91bc-0d5a6f2e8c47",
    "maskedPan": "342170******9554"
  },
  "merchant": {
    "name": "Airline of the world inc.",
    "country": "FIN",
    "url": "https://www.airline.com/order/64674"
  }
}
'

import requests

url = "https://api.{{tenant}}.ext-uat1-sandbox.mycore.enfuce.com/processor/v1/3ds/oob/challenge/initiate"

payload = {
    "authenticationId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "challengeId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "cardholder": {
        "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "customerNumber": "<string>"
    },
    "card": {
        "id": "b7e2a1d4-3f8c-4e29-91bc-0d5a6f2e8c47",
        "maskedPan": "342170******9554"
    },
    "merchant": {
        "name": "Airline of the world inc.",
        "country": "FIN",
        "url": "https://www.airline.com/order/64674"
    }
}
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    authenticationId: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    challengeId: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    cardholder: {id: '3c90c3cc-0d44-4b50-8888-8dd25736052a', customerNumber: '<string>'},
    card: {id: 'b7e2a1d4-3f8c-4e29-91bc-0d5a6f2e8c47', maskedPan: '342170******9554'},
    merchant: {
      name: 'Airline of the world inc.',
      country: 'FIN',
      url: 'https://www.airline.com/order/64674'
    }
  })
};

fetch('https://api.{{tenant}}.ext-uat1-sandbox.mycore.enfuce.com/processor/v1/3ds/oob/challenge/initiate', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.{{tenant}}.ext-uat1-sandbox.mycore.enfuce.com/processor/v1/3ds/oob/challenge/initiate",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'authenticationId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    'challengeId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    'cardholder' => [
        'id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
        'customerNumber' => '<string>'
    ],
    'card' => [
        'id' => 'b7e2a1d4-3f8c-4e29-91bc-0d5a6f2e8c47',
        'maskedPan' => '342170******9554'
    ],
    'merchant' => [
        'name' => 'Airline of the world inc.',
        'country' => 'FIN',
        'url' => 'https://www.airline.com/order/64674'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.{{tenant}}.ext-uat1-sandbox.mycore.enfuce.com/processor/v1/3ds/oob/challenge/initiate"

	payload := strings.NewReader("{\n  \"authenticationId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"challengeId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"cardholder\": {\n    \"id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"customerNumber\": \"<string>\"\n  },\n  \"card\": {\n    \"id\": \"b7e2a1d4-3f8c-4e29-91bc-0d5a6f2e8c47\",\n    \"maskedPan\": \"342170******9554\"\n  },\n  \"merchant\": {\n    \"name\": \"Airline of the world inc.\",\n    \"country\": \"FIN\",\n    \"url\": \"https://www.airline.com/order/64674\"\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Basic <encoded-value>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.{{tenant}}.ext-uat1-sandbox.mycore.enfuce.com/processor/v1/3ds/oob/challenge/initiate")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{\n  \"authenticationId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"challengeId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"cardholder\": {\n    \"id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"customerNumber\": \"<string>\"\n  },\n  \"card\": {\n    \"id\": \"b7e2a1d4-3f8c-4e29-91bc-0d5a6f2e8c47\",\n    \"maskedPan\": \"342170******9554\"\n  },\n  \"merchant\": {\n    \"name\": \"Airline of the world inc.\",\n    \"country\": \"FIN\",\n    \"url\": \"https://www.airline.com/order/64674\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.{{tenant}}.ext-uat1-sandbox.mycore.enfuce.com/processor/v1/3ds/oob/challenge/initiate")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Basic <encoded-value>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"authenticationId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"challengeId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"cardholder\": {\n    \"id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n    \"customerNumber\": \"<string>\"\n  },\n  \"card\": {\n    \"id\": \"b7e2a1d4-3f8c-4e29-91bc-0d5a6f2e8c47\",\n    \"maskedPan\": \"342170******9554\"\n  },\n  \"merchant\": {\n    \"name\": \"Airline of the world inc.\",\n    \"country\": \"FIN\",\n    \"url\": \"https://www.airline.com/order/64674\"\n  }\n}"

response = http.request(request)
puts response.read_body