curl --request PUT \
  --url https://api.mercemur.com/api/v1/orders/{orderId}/metadata \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '{
  "metadata": {}
}'

const options = {
  method: 'PUT',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({metadata: {}})
};

fetch('https://api.mercemur.com/api/v1/orders/{orderId}/metadata', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.mercemur.com/api/v1/orders/{orderId}/metadata"

payload = { "metadata": {} }
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.mercemur.com/api/v1/orders/{orderId}/metadata"

	payload := strings.NewReader("{\n  \"metadata\": {}\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	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))

}

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.mercemur.com/api/v1/orders/{orderId}/metadata",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'metadata' => [
        
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Idempotency-Key: <idempotency-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

{
  "data": {
    "amount_due_minor": 123,
    "billing_address": null,
    "created_at": "<string>",
    "currency_code": "<string>",
    "customer_id": null,
    "discount_total_minor": 123,
    "display_id": 123,
    "email": "<string>",
    "gift_card_total_minor": 123,
    "id": "<string>",
    "line_items": [
      {
        "id": "<string>",
        "product_title": "<string>",
        "quantity": 123,
        "unit_price_minor": 123,
        "variant_id": "<string>",
        "variant_title": "<string>"
      }
    ],
    "loyalty_total_minor": 123,
    "metadata": {
      "erp_ref": "<string>"
    },
    "shipping_address": null,
    "shipping_option_name": null,
    "shipping_total_minor": 123,
    "status": "<string>",
    "store_credit_total_minor": 123,
    "subtotal_minor": 123,
    "tax_total_minor": 123,
    "total_minor": 123,
    "updated_at": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}

{
  "error": {
    "code": "<string>",
    "message": "<string>",
    "resource": "<string>",
    "field": "<string>"
  }
}