curl --request POST \
  --url https://{portalApiUrl}/user/create \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "email": "john.smith@example.com",
  "firstname": "John",
  "lastname": "Smith",
  "groups": [
    "my-group"
  ],
  "user_organisation_identifier": "123456"
}
'

import requests

url = "https://{portalApiUrl}/user/create"

payload = {
    "email": "john.smith@example.com",
    "firstname": "John",
    "lastname": "Smith",
    "groups": ["my-group"],
    "user_organisation_identifier": "123456"
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    email: 'john.smith@example.com',
    firstname: 'John',
    lastname: 'Smith',
    groups: ['my-group'],
    user_organisation_identifier: '123456'
  })
};

fetch('https://{portalApiUrl}/user/create', 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://{portalApiUrl}/user/create",
  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([
    'email' => 'john.smith@example.com',
    'firstname' => 'John',
    'lastname' => 'Smith',
    'groups' => [
        'my-group'
    ],
    'user_organisation_identifier' => '123456'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "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://{portalApiUrl}/user/create"

	payload := strings.NewReader("{\n  \"email\": \"john.smith@example.com\",\n  \"firstname\": \"John\",\n  \"lastname\": \"Smith\",\n  \"groups\": [\n    \"my-group\"\n  ],\n  \"user_organisation_identifier\": \"123456\"\n}")

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

	req.Header.Add("Authorization", "<api-key>")
	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://{portalApiUrl}/user/create")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"email\": \"john.smith@example.com\",\n  \"firstname\": \"John\",\n  \"lastname\": \"Smith\",\n  \"groups\": [\n    \"my-group\"\n  ],\n  \"user_organisation_identifier\": \"123456\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{portalApiUrl}/user/create")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"email\": \"john.smith@example.com\",\n  \"firstname\": \"John\",\n  \"lastname\": \"Smith\",\n  \"groups\": [\n    \"my-group\"\n  ],\n  \"user_organisation_identifier\": \"123456\"\n}"

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

{
  "status": true,
  "result": {
    "user_id": 123,
    "email": "jsmith@example.com",
    "firstname": "<string>",
    "lastname": "<string>",
    "user_organisation_identifier": "<string>",
    "groups": [
      "<string>"
    ],
    "properties": {},
    "user_created_date": "2023-11-07T05:31:56Z",
    "user_updated_date": "2023-11-07T05:31:56Z"
  }
}

{
  "code": 123,
  "message": "<string>"
}