curl --request POST \
  --url https://api.example.com/cardholder \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": "20218aae-b15e-406c-9e9f-23735cd86a48",
  "customerNumber": "ABCDEFGH123456789",
  "locale": "en-GB",
  "mobileNumber": "+358401234567",
  "firstName": "John",
  "middleName": "James",
  "lastName": "Doe",
  "createdAt": "2023-11-07T05:31:56Z",
  "updatedAt": "2023-11-07T05:31:56Z",
  "updateCount": 1,
  "email": "john.doe@test.com",
  "taxId": "ABCDEFGH123456789",
  "dateOfBirth": "1935-01-15",
  "nationality": [
    "FIN",
    "SWE"
  ],
  "riskScore": "Med",
  "birthCountry": "FIN",
  "identificationNumber": "19560606-1234"
}
'

import requests

url = "https://api.example.com/cardholder"

payload = {
    "id": "20218aae-b15e-406c-9e9f-23735cd86a48",
    "customerNumber": "ABCDEFGH123456789",
    "locale": "en-GB",
    "mobileNumber": "+358401234567",
    "firstName": "John",
    "middleName": "James",
    "lastName": "Doe",
    "createdAt": "2023-11-07T05:31:56Z",
    "updatedAt": "2023-11-07T05:31:56Z",
    "updateCount": 1,
    "email": "john.doe@test.com",
    "taxId": "ABCDEFGH123456789",
    "dateOfBirth": "1935-01-15",
    "nationality": ["FIN", "SWE"],
    "riskScore": "Med",
    "birthCountry": "FIN",
    "identificationNumber": "19560606-1234"
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    id: '20218aae-b15e-406c-9e9f-23735cd86a48',
    customerNumber: 'ABCDEFGH123456789',
    locale: 'en-GB',
    mobileNumber: '+358401234567',
    firstName: 'John',
    middleName: 'James',
    lastName: 'Doe',
    createdAt: '2023-11-07T05:31:56Z',
    updatedAt: '2023-11-07T05:31:56Z',
    updateCount: 1,
    email: 'john.doe@test.com',
    taxId: 'ABCDEFGH123456789',
    dateOfBirth: '1935-01-15',
    nationality: ['FIN', 'SWE'],
    riskScore: 'Med',
    birthCountry: 'FIN',
    identificationNumber: '19560606-1234'
  })
};

fetch('https://api.example.com/cardholder', 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.example.com/cardholder",
  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([
    'id' => '20218aae-b15e-406c-9e9f-23735cd86a48',
    'customerNumber' => 'ABCDEFGH123456789',
    'locale' => 'en-GB',
    'mobileNumber' => '+358401234567',
    'firstName' => 'John',
    'middleName' => 'James',
    'lastName' => 'Doe',
    'createdAt' => '2023-11-07T05:31:56Z',
    'updatedAt' => '2023-11-07T05:31:56Z',
    'updateCount' => 1,
    'email' => 'john.doe@test.com',
    'taxId' => 'ABCDEFGH123456789',
    'dateOfBirth' => '1935-01-15',
    'nationality' => [
        'FIN',
        'SWE'
    ],
    'riskScore' => 'Med',
    'birthCountry' => 'FIN',
    'identificationNumber' => '19560606-1234'
  ]),
  CURLOPT_HTTPHEADER => [
    "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.example.com/cardholder"

	payload := strings.NewReader("{\n  \"id\": \"20218aae-b15e-406c-9e9f-23735cd86a48\",\n  \"customerNumber\": \"ABCDEFGH123456789\",\n  \"locale\": \"en-GB\",\n  \"mobileNumber\": \"+358401234567\",\n  \"firstName\": \"John\",\n  \"middleName\": \"James\",\n  \"lastName\": \"Doe\",\n  \"createdAt\": \"2023-11-07T05:31:56Z\",\n  \"updatedAt\": \"2023-11-07T05:31:56Z\",\n  \"updateCount\": 1,\n  \"email\": \"john.doe@test.com\",\n  \"taxId\": \"ABCDEFGH123456789\",\n  \"dateOfBirth\": \"1935-01-15\",\n  \"nationality\": [\n    \"FIN\",\n    \"SWE\"\n  ],\n  \"riskScore\": \"Med\",\n  \"birthCountry\": \"FIN\",\n  \"identificationNumber\": \"19560606-1234\"\n}")

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

	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.example.com/cardholder")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": \"20218aae-b15e-406c-9e9f-23735cd86a48\",\n  \"customerNumber\": \"ABCDEFGH123456789\",\n  \"locale\": \"en-GB\",\n  \"mobileNumber\": \"+358401234567\",\n  \"firstName\": \"John\",\n  \"middleName\": \"James\",\n  \"lastName\": \"Doe\",\n  \"createdAt\": \"2023-11-07T05:31:56Z\",\n  \"updatedAt\": \"2023-11-07T05:31:56Z\",\n  \"updateCount\": 1,\n  \"email\": \"john.doe@test.com\",\n  \"taxId\": \"ABCDEFGH123456789\",\n  \"dateOfBirth\": \"1935-01-15\",\n  \"nationality\": [\n    \"FIN\",\n    \"SWE\"\n  ],\n  \"riskScore\": \"Med\",\n  \"birthCountry\": \"FIN\",\n  \"identificationNumber\": \"19560606-1234\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/cardholder")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"id\": \"20218aae-b15e-406c-9e9f-23735cd86a48\",\n  \"customerNumber\": \"ABCDEFGH123456789\",\n  \"locale\": \"en-GB\",\n  \"mobileNumber\": \"+358401234567\",\n  \"firstName\": \"John\",\n  \"middleName\": \"James\",\n  \"lastName\": \"Doe\",\n  \"createdAt\": \"2023-11-07T05:31:56Z\",\n  \"updatedAt\": \"2023-11-07T05:31:56Z\",\n  \"updateCount\": 1,\n  \"email\": \"john.doe@test.com\",\n  \"taxId\": \"ABCDEFGH123456789\",\n  \"dateOfBirth\": \"1935-01-15\",\n  \"nationality\": [\n    \"FIN\",\n    \"SWE\"\n  ],\n  \"riskScore\": \"Med\",\n  \"birthCountry\": \"FIN\",\n  \"identificationNumber\": \"19560606-1234\"\n}"

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