curl --request POST \
  --url https://api.example.com/orders \
  --header 'Content-Type: <content-type>' \
  --header 'X-API-Key: <x-api-key>' \
  --header 'X-Store-Id: <x-store-id>' \
  --data '
{
  "order_id": "<string>",
  "order_date": "<string>",
  "delivery_date": "<string>",
  "request_review_at": "<string>",
  "products": [
    {
      "products[].product_id": "<string>",
      "products[].sku": "<string>",
      "products[].name": "<string>",
      "products[].price": 123,
      "products[].url": "<string>",
      "products[].pictures": [
        {}
      ],
      "products[].gtin": "<string>",
      "products[].mpn": "<string>"
    }
  ],
  "customers": [
    {
      "customers[].name": "<string>",
      "customers[].email": "<string>",
      "customers[].phone": "<string>",
      "customers[].origin": "<string>"
    }
  ]
}
'

import requests

url = "https://api.example.com/orders"

payload = {
    "order_id": "<string>",
    "order_date": "<string>",
    "delivery_date": "<string>",
    "request_review_at": "<string>",
    "products": [
        {
            "products[].product_id": "<string>",
            "products[].sku": "<string>",
            "products[].name": "<string>",
            "products[].price": 123,
            "products[].url": "<string>",
            "products[].pictures": [{}],
            "products[].gtin": "<string>",
            "products[].mpn": "<string>"
        }
    ],
    "customers": [
        {
            "customers[].name": "<string>",
            "customers[].email": "<string>",
            "customers[].phone": "<string>",
            "customers[].origin": "<string>"
        }
    ]
}
headers = {
    "X-API-Key": "<x-api-key>",
    "X-Store-Id": "<x-store-id>",
    "Content-Type": "<content-type>"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'X-API-Key': '<x-api-key>',
    'X-Store-Id': '<x-store-id>',
    'Content-Type': '<content-type>'
  },
  body: JSON.stringify({
    order_id: '<string>',
    order_date: '<string>',
    delivery_date: '<string>',
    request_review_at: '<string>',
    products: [
      {
        'products[].product_id': '<string>',
        'products[].sku': '<string>',
        'products[].name': '<string>',
        'products[].price': 123,
        'products[].url': '<string>',
        'products[].pictures': [{}],
        'products[].gtin': '<string>',
        'products[].mpn': '<string>'
      }
    ],
    customers: [
      {
        'customers[].name': '<string>',
        'customers[].email': '<string>',
        'customers[].phone': '<string>',
        'customers[].origin': '<string>'
      }
    ]
  })
};

fetch('https://api.example.com/orders', 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/orders",
  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([
    'order_id' => '<string>',
    'order_date' => '<string>',
    'delivery_date' => '<string>',
    'request_review_at' => '<string>',
    'products' => [
        [
                'products[].product_id' => '<string>',
                'products[].sku' => '<string>',
                'products[].name' => '<string>',
                'products[].price' => 123,
                'products[].url' => '<string>',
                'products[].pictures' => [
                                [
                                                                
                                ]
                ],
                'products[].gtin' => '<string>',
                'products[].mpn' => '<string>'
        ]
    ],
    'customers' => [
        [
                'customers[].name' => '<string>',
                'customers[].email' => '<string>',
                'customers[].phone' => '<string>',
                'customers[].origin' => '<string>'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: <content-type>",
    "X-API-Key: <x-api-key>",
    "X-Store-Id: <x-store-id>"
  ],
]);

$response = curl_exec($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/orders"

	payload := strings.NewReader("{\n  \"order_id\": \"<string>\",\n  \"order_date\": \"<string>\",\n  \"delivery_date\": \"<string>\",\n  \"request_review_at\": \"<string>\",\n  \"products\": [\n    {\n      \"products[].product_id\": \"<string>\",\n      \"products[].sku\": \"<string>\",\n      \"products[].name\": \"<string>\",\n      \"products[].price\": 123,\n      \"products[].url\": \"<string>\",\n      \"products[].pictures\": [\n        {}\n      ],\n      \"products[].gtin\": \"<string>\",\n      \"products[].mpn\": \"<string>\"\n    }\n  ],\n  \"customers\": [\n    {\n      \"customers[].name\": \"<string>\",\n      \"customers[].email\": \"<string>\",\n      \"customers[].phone\": \"<string>\",\n      \"customers[].origin\": \"<string>\"\n    }\n  ]\n}")

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

	req.Header.Add("X-API-Key", "<x-api-key>")
	req.Header.Add("X-Store-Id", "<x-store-id>")
	req.Header.Add("Content-Type", "<content-type>")

	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/orders")
  .header("X-API-Key", "<x-api-key>")
  .header("X-Store-Id", "<x-store-id>")
  .header("Content-Type", "<content-type>")
  .body("{\n  \"order_id\": \"<string>\",\n  \"order_date\": \"<string>\",\n  \"delivery_date\": \"<string>\",\n  \"request_review_at\": \"<string>\",\n  \"products\": [\n    {\n      \"products[].product_id\": \"<string>\",\n      \"products[].sku\": \"<string>\",\n      \"products[].name\": \"<string>\",\n      \"products[].price\": 123,\n      \"products[].url\": \"<string>\",\n      \"products[].pictures\": [\n        {}\n      ],\n      \"products[].gtin\": \"<string>\",\n      \"products[].mpn\": \"<string>\"\n    }\n  ],\n  \"customers\": [\n    {\n      \"customers[].name\": \"<string>\",\n      \"customers[].email\": \"<string>\",\n      \"customers[].phone\": \"<string>\",\n      \"customers[].origin\": \"<string>\"\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

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

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

request = Net::HTTP::Post.new(url)
request["X-API-Key"] = '<x-api-key>'
request["X-Store-Id"] = '<x-store-id>'
request["Content-Type"] = '<content-type>'
request.body = "{\n  \"order_id\": \"<string>\",\n  \"order_date\": \"<string>\",\n  \"delivery_date\": \"<string>\",\n  \"request_review_at\": \"<string>\",\n  \"products\": [\n    {\n      \"products[].product_id\": \"<string>\",\n      \"products[].sku\": \"<string>\",\n      \"products[].name\": \"<string>\",\n      \"products[].price\": 123,\n      \"products[].url\": \"<string>\",\n      \"products[].pictures\": [\n        {}\n      ],\n      \"products[].gtin\": \"<string>\",\n      \"products[].mpn\": \"<string>\"\n    }\n  ],\n  \"customers\": [\n    {\n      \"customers[].name\": \"<string>\",\n      \"customers[].email\": \"<string>\",\n      \"customers[].phone\": \"<string>\",\n      \"customers[].origin\": \"<string>\"\n    }\n  ]\n}"

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

{
  "id": "<string>"
}