curl --request POST \
  --url https://api.paytsoftware.com/v1/contacts \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "administration_id": "<string>",
  "contacts": [
    {
      "contact_identifier": "<string>",
      "id": "<string>",
      "birth_date": "<string>",
      "call_phone_number": "<string>",
      "default_email_address": "<string>",
      "firstname": "<string>",
      "gender": [
        "female",
        "male",
        "male_female"
      ],
      "infix": "<string>",
      "invoice_email_address": "<string>",
      "invoice_cc_email_address": "<string>",
      "invoice_bcc_email_address": "<string>",
      "lastname": "<string>",
      "middlename": "<string>",
      "postal_address_street_1": "<string>",
      "postal_address_street_2": "<string>",
      "postal_address_postal_code": "<string>",
      "postal_address_city": "<string>",
      "postal_address_country_code": "<string>",
      "postal_address_region": "<string>",
      "prefix": "<string>",
      "reminder_email_address": "<string>",
      "reminder_cc_email_address": "<string>",
      "reminder_bcc_email_address": "<string>",
      "sms_phone_number": "<string>"
    }
  ]
}
'

import requests

url = "https://api.paytsoftware.com/v1/contacts"

payload = {
    "administration_id": "<string>",
    "contacts": [
        {
            "contact_identifier": "<string>",
            "id": "<string>",
            "birth_date": "<string>",
            "call_phone_number": "<string>",
            "default_email_address": "<string>",
            "firstname": "<string>",
            "gender": ["female", "male", "male_female"],
            "infix": "<string>",
            "invoice_email_address": "<string>",
            "invoice_cc_email_address": "<string>",
            "invoice_bcc_email_address": "<string>",
            "lastname": "<string>",
            "middlename": "<string>",
            "postal_address_street_1": "<string>",
            "postal_address_street_2": "<string>",
            "postal_address_postal_code": "<string>",
            "postal_address_city": "<string>",
            "postal_address_country_code": "<string>",
            "postal_address_region": "<string>",
            "prefix": "<string>",
            "reminder_email_address": "<string>",
            "reminder_cc_email_address": "<string>",
            "reminder_bcc_email_address": "<string>",
            "sms_phone_number": "<string>"
        }
    ]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    administration_id: '<string>',
    contacts: [
      {
        contact_identifier: '<string>',
        id: '<string>',
        birth_date: '<string>',
        call_phone_number: '<string>',
        default_email_address: '<string>',
        firstname: '<string>',
        gender: ['female', 'male', 'male_female'],
        infix: '<string>',
        invoice_email_address: '<string>',
        invoice_cc_email_address: '<string>',
        invoice_bcc_email_address: '<string>',
        lastname: '<string>',
        middlename: '<string>',
        postal_address_street_1: '<string>',
        postal_address_street_2: '<string>',
        postal_address_postal_code: '<string>',
        postal_address_city: '<string>',
        postal_address_country_code: '<string>',
        postal_address_region: '<string>',
        prefix: '<string>',
        reminder_email_address: '<string>',
        reminder_cc_email_address: '<string>',
        reminder_bcc_email_address: '<string>',
        sms_phone_number: '<string>'
      }
    ]
  })
};

fetch('https://api.paytsoftware.com/v1/contacts', 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.paytsoftware.com/v1/contacts",
  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([
    'administration_id' => '<string>',
    'contacts' => [
        [
                'contact_identifier' => '<string>',
                'id' => '<string>',
                'birth_date' => '<string>',
                'call_phone_number' => '<string>',
                'default_email_address' => '<string>',
                'firstname' => '<string>',
                'gender' => [
                                'female',
                                'male',
                                'male_female'
                ],
                'infix' => '<string>',
                'invoice_email_address' => '<string>',
                'invoice_cc_email_address' => '<string>',
                'invoice_bcc_email_address' => '<string>',
                'lastname' => '<string>',
                'middlename' => '<string>',
                'postal_address_street_1' => '<string>',
                'postal_address_street_2' => '<string>',
                'postal_address_postal_code' => '<string>',
                'postal_address_city' => '<string>',
                'postal_address_country_code' => '<string>',
                'postal_address_region' => '<string>',
                'prefix' => '<string>',
                'reminder_email_address' => '<string>',
                'reminder_cc_email_address' => '<string>',
                'reminder_bcc_email_address' => '<string>',
                'sms_phone_number' => '<string>'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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.paytsoftware.com/v1/contacts"

	payload := strings.NewReader("{\n  \"administration_id\": \"<string>\",\n  \"contacts\": [\n    {\n      \"contact_identifier\": \"<string>\",\n      \"id\": \"<string>\",\n      \"birth_date\": \"<string>\",\n      \"call_phone_number\": \"<string>\",\n      \"default_email_address\": \"<string>\",\n      \"firstname\": \"<string>\",\n      \"gender\": [\n        \"female\",\n        \"male\",\n        \"male_female\"\n      ],\n      \"infix\": \"<string>\",\n      \"invoice_email_address\": \"<string>\",\n      \"invoice_cc_email_address\": \"<string>\",\n      \"invoice_bcc_email_address\": \"<string>\",\n      \"lastname\": \"<string>\",\n      \"middlename\": \"<string>\",\n      \"postal_address_street_1\": \"<string>\",\n      \"postal_address_street_2\": \"<string>\",\n      \"postal_address_postal_code\": \"<string>\",\n      \"postal_address_city\": \"<string>\",\n      \"postal_address_country_code\": \"<string>\",\n      \"postal_address_region\": \"<string>\",\n      \"prefix\": \"<string>\",\n      \"reminder_email_address\": \"<string>\",\n      \"reminder_cc_email_address\": \"<string>\",\n      \"reminder_bcc_email_address\": \"<string>\",\n      \"sms_phone_number\": \"<string>\"\n    }\n  ]\n}")

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

	req.Header.Add("Authorization", "Bearer <token>")
	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.paytsoftware.com/v1/contacts")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"administration_id\": \"<string>\",\n  \"contacts\": [\n    {\n      \"contact_identifier\": \"<string>\",\n      \"id\": \"<string>\",\n      \"birth_date\": \"<string>\",\n      \"call_phone_number\": \"<string>\",\n      \"default_email_address\": \"<string>\",\n      \"firstname\": \"<string>\",\n      \"gender\": [\n        \"female\",\n        \"male\",\n        \"male_female\"\n      ],\n      \"infix\": \"<string>\",\n      \"invoice_email_address\": \"<string>\",\n      \"invoice_cc_email_address\": \"<string>\",\n      \"invoice_bcc_email_address\": \"<string>\",\n      \"lastname\": \"<string>\",\n      \"middlename\": \"<string>\",\n      \"postal_address_street_1\": \"<string>\",\n      \"postal_address_street_2\": \"<string>\",\n      \"postal_address_postal_code\": \"<string>\",\n      \"postal_address_city\": \"<string>\",\n      \"postal_address_country_code\": \"<string>\",\n      \"postal_address_region\": \"<string>\",\n      \"prefix\": \"<string>\",\n      \"reminder_email_address\": \"<string>\",\n      \"reminder_cc_email_address\": \"<string>\",\n      \"reminder_bcc_email_address\": \"<string>\",\n      \"sms_phone_number\": \"<string>\"\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.paytsoftware.com/v1/contacts")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"administration_id\": \"<string>\",\n  \"contacts\": [\n    {\n      \"contact_identifier\": \"<string>\",\n      \"id\": \"<string>\",\n      \"birth_date\": \"<string>\",\n      \"call_phone_number\": \"<string>\",\n      \"default_email_address\": \"<string>\",\n      \"firstname\": \"<string>\",\n      \"gender\": [\n        \"female\",\n        \"male\",\n        \"male_female\"\n      ],\n      \"infix\": \"<string>\",\n      \"invoice_email_address\": \"<string>\",\n      \"invoice_cc_email_address\": \"<string>\",\n      \"invoice_bcc_email_address\": \"<string>\",\n      \"lastname\": \"<string>\",\n      \"middlename\": \"<string>\",\n      \"postal_address_street_1\": \"<string>\",\n      \"postal_address_street_2\": \"<string>\",\n      \"postal_address_postal_code\": \"<string>\",\n      \"postal_address_city\": \"<string>\",\n      \"postal_address_country_code\": \"<string>\",\n      \"postal_address_region\": \"<string>\",\n      \"prefix\": \"<string>\",\n      \"reminder_email_address\": \"<string>\",\n      \"reminder_cc_email_address\": \"<string>\",\n      \"reminder_bcc_email_address\": \"<string>\",\n      \"sms_phone_number\": \"<string>\"\n    }\n  ]\n}"

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

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

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