curl --request POST \
  --url https://anzapi.onboardme.app/api/v1/entities \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "entityType": "Company",
  "entityTypeID": 2,
  "clientStatus": "Lead",
  "entityCode": "NEW-2048",
  "externalSystemID": "EXT-9001",
  "entityName": "Harbour View Pty Ltd",
  "email": "[email protected]",
  "telephone": "+61 2 8000 3300",
  "physicalAddress": {
    "address1": "Level 4, 55 Pitt Street",
    "city": "Sydney",
    "state": "NSW",
    "postcode": "2000",
    "country": "AU"
  }
}
'

import requests

url = "https://anzapi.onboardme.app/api/v1/entities"

payload = {
    "entityType": "Company",
    "entityTypeID": 2,
    "clientStatus": "Lead",
    "entityCode": "NEW-2048",
    "externalSystemID": "EXT-9001",
    "entityName": "Harbour View Pty Ltd",
    "email": "[email protected]",
    "telephone": "+61 2 8000 3300",
    "physicalAddress": {
        "address1": "Level 4, 55 Pitt Street",
        "city": "Sydney",
        "state": "NSW",
        "postcode": "2000",
        "country": "AU"
    }
}
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({
    entityType: 'Company',
    entityTypeID: 2,
    clientStatus: 'Lead',
    entityCode: 'NEW-2048',
    externalSystemID: 'EXT-9001',
    entityName: 'Harbour View Pty Ltd',
    email: '[email protected]',
    telephone: '+61 2 8000 3300',
    physicalAddress: {
      address1: 'Level 4, 55 Pitt Street',
      city: 'Sydney',
      state: 'NSW',
      postcode: '2000',
      country: 'AU'
    }
  })
};

fetch('https://anzapi.onboardme.app/api/v1/entities', 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://anzapi.onboardme.app/api/v1/entities",
  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([
    'entityType' => 'Company',
    'entityTypeID' => 2,
    'clientStatus' => 'Lead',
    'entityCode' => 'NEW-2048',
    'externalSystemID' => 'EXT-9001',
    'entityName' => 'Harbour View Pty Ltd',
    'email' => '[email protected]',
    'telephone' => '+61 2 8000 3300',
    'physicalAddress' => [
        'address1' => 'Level 4, 55 Pitt Street',
        'city' => 'Sydney',
        'state' => 'NSW',
        'postcode' => '2000',
        'country' => 'AU'
    ]
  ]),
  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://anzapi.onboardme.app/api/v1/entities"

	payload := strings.NewReader("{\n  \"entityType\": \"Company\",\n  \"entityTypeID\": 2,\n  \"clientStatus\": \"Lead\",\n  \"entityCode\": \"NEW-2048\",\n  \"externalSystemID\": \"EXT-9001\",\n  \"entityName\": \"Harbour View Pty Ltd\",\n  \"email\": \"[email protected]\",\n  \"telephone\": \"+61 2 8000 3300\",\n  \"physicalAddress\": {\n    \"address1\": \"Level 4, 55 Pitt Street\",\n    \"city\": \"Sydney\",\n    \"state\": \"NSW\",\n    \"postcode\": \"2000\",\n    \"country\": \"AU\"\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://anzapi.onboardme.app/api/v1/entities")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{\n  \"entityType\": \"Company\",\n  \"entityTypeID\": 2,\n  \"clientStatus\": \"Lead\",\n  \"entityCode\": \"NEW-2048\",\n  \"externalSystemID\": \"EXT-9001\",\n  \"entityName\": \"Harbour View Pty Ltd\",\n  \"email\": \"[email protected]\",\n  \"telephone\": \"+61 2 8000 3300\",\n  \"physicalAddress\": {\n    \"address1\": \"Level 4, 55 Pitt Street\",\n    \"city\": \"Sydney\",\n    \"state\": \"NSW\",\n    \"postcode\": \"2000\",\n    \"country\": \"AU\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://anzapi.onboardme.app/api/v1/entities")

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  \"entityType\": \"Company\",\n  \"entityTypeID\": 2,\n  \"clientStatus\": \"Lead\",\n  \"entityCode\": \"NEW-2048\",\n  \"externalSystemID\": \"EXT-9001\",\n  \"entityName\": \"Harbour View Pty Ltd\",\n  \"email\": \"[email protected]\",\n  \"telephone\": \"+61 2 8000 3300\",\n  \"physicalAddress\": {\n    \"address1\": \"Level 4, 55 Pitt Street\",\n    \"city\": \"Sydney\",\n    \"state\": \"NSW\",\n    \"postcode\": \"2000\",\n    \"country\": \"AU\"\n  }\n}"

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

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "detail": "<string>",
  "instance": "<string>"
}

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "detail": "<string>",
  "instance": "<string>"
}

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "detail": "<string>",
  "instance": "<string>"
}

{
  "type": "<string>",
  "title": "<string>",
  "status": 123,
  "detail": "<string>",
  "instance": "<string>"
}