curl --request POST \
  --url https://server.stage.overflow.co/api/v3/donors \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --header 'x-client-id: <api-key>' \
  --data '
{
  "firstName": "John",
  "lastName": "Doe",
  "email": "john.doe@example.com",
  "mailingAddress": {
    "city": "Anytown",
    "line1": "123 Main St",
    "line2": "Apt 1",
    "state": "CA",
    "zip": "12345"
  },
  "phone": "+1234567890"
}
'

import requests

url = "https://server.stage.overflow.co/api/v3/donors"

payload = {
    "firstName": "John",
    "lastName": "Doe",
    "email": "john.doe@example.com",
    "mailingAddress": {
        "city": "Anytown",
        "line1": "123 Main St",
        "line2": "Apt 1",
        "state": "CA",
        "zip": "12345"
    },
    "phone": "+1234567890"
}
headers = {
    "x-client-id": "<api-key>",
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'x-client-id': '<api-key>',
    'x-api-key': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    firstName: 'John',
    lastName: 'Doe',
    email: 'john.doe@example.com',
    mailingAddress: {
      city: 'Anytown',
      line1: '123 Main St',
      line2: 'Apt 1',
      state: 'CA',
      zip: '12345'
    },
    phone: '+1234567890'
  })
};

fetch('https://server.stage.overflow.co/api/v3/donors', 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://server.stage.overflow.co/api/v3/donors",
  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([
    'firstName' => 'John',
    'lastName' => 'Doe',
    'email' => 'john.doe@example.com',
    'mailingAddress' => [
        'city' => 'Anytown',
        'line1' => '123 Main St',
        'line2' => 'Apt 1',
        'state' => 'CA',
        'zip' => '12345'
    ],
    'phone' => '+1234567890'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "x-api-key: <api-key>",
    "x-client-id: <api-key>"
  ],
]);

$response = curl_exec($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://server.stage.overflow.co/api/v3/donors"

	payload := strings.NewReader("{\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\",\n  \"email\": \"john.doe@example.com\",\n  \"mailingAddress\": {\n    \"city\": \"Anytown\",\n    \"line1\": \"123 Main St\",\n    \"line2\": \"Apt 1\",\n    \"state\": \"CA\",\n    \"zip\": \"12345\"\n  },\n  \"phone\": \"+1234567890\"\n}")

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

	req.Header.Add("x-client-id", "<api-key>")
	req.Header.Add("x-api-key", "<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://server.stage.overflow.co/api/v3/donors")
  .header("x-client-id", "<api-key>")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\",\n  \"email\": \"john.doe@example.com\",\n  \"mailingAddress\": {\n    \"city\": \"Anytown\",\n    \"line1\": \"123 Main St\",\n    \"line2\": \"Apt 1\",\n    \"state\": \"CA\",\n    \"zip\": \"12345\"\n  },\n  \"phone\": \"+1234567890\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://server.stage.overflow.co/api/v3/donors")

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

request = Net::HTTP::Post.new(url)
request["x-client-id"] = '<api-key>'
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"firstName\": \"John\",\n  \"lastName\": \"Doe\",\n  \"email\": \"john.doe@example.com\",\n  \"mailingAddress\": {\n    \"city\": \"Anytown\",\n    \"line1\": \"123 Main St\",\n    \"line2\": \"Apt 1\",\n    \"state\": \"CA\",\n    \"zip\": \"12345\"\n  },\n  \"phone\": \"+1234567890\"\n}"

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

{
  "data": "<string>"
}