curl --request POST \
  --url https://api.example.com/v1/customers \
  --header 'Content-Type: application/json' \
  --data '
{
  "first_name": "John",
  "last_name": "Doe",
  "company": "US Oil Supply",
  "merchant_identifier": "EID-987654-321",
  "phone_number": "555-555-555",
  "email_address": "email@email.com",
  "shipping_address": {
    "name": "<string>",
    "line1": "<string>",
    "line2": "<string>",
    "city": "<string>",
    "state": "<string>",
    "postal_code": "<string>",
    "country": "<string>"
  },
  "metadata": {},
  "initiated_by_user_id": 123
}
'

import requests

url = "https://api.example.com/v1/customers"

payload = {
    "first_name": "John",
    "last_name": "Doe",
    "company": "US Oil Supply",
    "merchant_identifier": "EID-987654-321",
    "phone_number": "555-555-555",
    "email_address": "email@email.com",
    "shipping_address": {
        "name": "<string>",
        "line1": "<string>",
        "line2": "<string>",
        "city": "<string>",
        "state": "<string>",
        "postal_code": "<string>",
        "country": "<string>"
    },
    "metadata": {},
    "initiated_by_user_id": 123
}
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({
    first_name: 'John',
    last_name: 'Doe',
    company: 'US Oil Supply',
    merchant_identifier: 'EID-987654-321',
    phone_number: '555-555-555',
    email_address: 'email@email.com',
    shipping_address: {
      name: '<string>',
      line1: '<string>',
      line2: '<string>',
      city: '<string>',
      state: '<string>',
      postal_code: '<string>',
      country: '<string>'
    },
    metadata: {},
    initiated_by_user_id: 123
  })
};

fetch('https://api.example.com/v1/customers', 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/v1/customers",
  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([
    'first_name' => 'John',
    'last_name' => 'Doe',
    'company' => 'US Oil Supply',
    'merchant_identifier' => 'EID-987654-321',
    'phone_number' => '555-555-555',
    'email_address' => 'email@email.com',
    'shipping_address' => [
        'name' => '<string>',
        'line1' => '<string>',
        'line2' => '<string>',
        'city' => '<string>',
        'state' => '<string>',
        'postal_code' => '<string>',
        'country' => '<string>'
    ],
    'metadata' => [
        
    ],
    'initiated_by_user_id' => 123
  ]),
  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/v1/customers"

	payload := strings.NewReader("{\n  \"first_name\": \"John\",\n  \"last_name\": \"Doe\",\n  \"company\": \"US Oil Supply\",\n  \"merchant_identifier\": \"EID-987654-321\",\n  \"phone_number\": \"555-555-555\",\n  \"email_address\": \"email@email.com\",\n  \"shipping_address\": {\n    \"name\": \"<string>\",\n    \"line1\": \"<string>\",\n    \"line2\": \"<string>\",\n    \"city\": \"<string>\",\n    \"state\": \"<string>\",\n    \"postal_code\": \"<string>\",\n    \"country\": \"<string>\"\n  },\n  \"metadata\": {},\n  \"initiated_by_user_id\": 123\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/v1/customers")
  .header("Content-Type", "application/json")
  .body("{\n  \"first_name\": \"John\",\n  \"last_name\": \"Doe\",\n  \"company\": \"US Oil Supply\",\n  \"merchant_identifier\": \"EID-987654-321\",\n  \"phone_number\": \"555-555-555\",\n  \"email_address\": \"email@email.com\",\n  \"shipping_address\": {\n    \"name\": \"<string>\",\n    \"line1\": \"<string>\",\n    \"line2\": \"<string>\",\n    \"city\": \"<string>\",\n    \"state\": \"<string>\",\n    \"postal_code\": \"<string>\",\n    \"country\": \"<string>\"\n  },\n  \"metadata\": {},\n  \"initiated_by_user_id\": 123\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/v1/customers")

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  \"first_name\": \"John\",\n  \"last_name\": \"Doe\",\n  \"company\": \"US Oil Supply\",\n  \"merchant_identifier\": \"EID-987654-321\",\n  \"phone_number\": \"555-555-555\",\n  \"email_address\": \"email@email.com\",\n  \"shipping_address\": {\n    \"name\": \"<string>\",\n    \"line1\": \"<string>\",\n    \"line2\": \"<string>\",\n    \"city\": \"<string>\",\n    \"state\": \"<string>\",\n    \"postal_code\": \"<string>\",\n    \"country\": \"<string>\"\n  },\n  \"metadata\": {},\n  \"initiated_by_user_id\": 123\n}"

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

{
  "customer": {
    "id": "00000000-0000-0000-0000-000000000000",
    "first_name": "John",
    "last_name": "Doe",
    "company": "US Oil Supply",
    "merchant_identifier": "EID-987654-321",
    "phone_number": "555-555-555",
    "email_address": "email@email.com",
    "shipping_address": {
      "name": "<string>",
      "line1": "<string>",
      "line2": "<string>",
      "city": "<string>",
      "state": "<string>",
      "postal_code": "<string>",
      "country": "<string>"
    },
    "metadata": {}
  },
  "request_id": "000000000000000000000",
  "errors": [
    {
      "type": "<string>",
      "message": null
    }
  ]
}

{
  "errors": [
    {
      "type": "<string>",
      "message": null
    }
  ],
  "request_id": "000000000000000000000"
}