curl --request POST \
  --url https://1a557de0-701c-477d-bedd-433520441dae.mock.pstmn.io/api/flights/{id}/manifests \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "flightId": "QR001-20240101",
  "awbNumbers": [
    "15712345678",
    "15712345679"
  ],
  "totalPieces": 20,
  "totalWeight": 1000,
  "totalVolume": 15
}
'

import requests

url = "https://1a557de0-701c-477d-bedd-433520441dae.mock.pstmn.io/api/flights/{id}/manifests"

payload = {
    "flightId": "QR001-20240101",
    "awbNumbers": ["15712345678", "15712345679"],
    "totalPieces": 20,
    "totalWeight": 1000,
    "totalVolume": 15
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    flightId: 'QR001-20240101',
    awbNumbers: ['15712345678', '15712345679'],
    totalPieces: 20,
    totalWeight: 1000,
    totalVolume: 15
  })
};

fetch('https://1a557de0-701c-477d-bedd-433520441dae.mock.pstmn.io/api/flights/{id}/manifests', 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://1a557de0-701c-477d-bedd-433520441dae.mock.pstmn.io/api/flights/{id}/manifests",
  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([
    'flightId' => 'QR001-20240101',
    'awbNumbers' => [
        '15712345678',
        '15712345679'
    ],
    'totalPieces' => 20,
    'totalWeight' => 1000,
    'totalVolume' => 15
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "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://1a557de0-701c-477d-bedd-433520441dae.mock.pstmn.io/api/flights/{id}/manifests"

	payload := strings.NewReader("{\n  \"flightId\": \"QR001-20240101\",\n  \"awbNumbers\": [\n    \"15712345678\",\n    \"15712345679\"\n  ],\n  \"totalPieces\": 20,\n  \"totalWeight\": 1000,\n  \"totalVolume\": 15\n}")

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

	req.Header.Add("Authorization", "<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://1a557de0-701c-477d-bedd-433520441dae.mock.pstmn.io/api/flights/{id}/manifests")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"flightId\": \"QR001-20240101\",\n  \"awbNumbers\": [\n    \"15712345678\",\n    \"15712345679\"\n  ],\n  \"totalPieces\": 20,\n  \"totalWeight\": 1000,\n  \"totalVolume\": 15\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://1a557de0-701c-477d-bedd-433520441dae.mock.pstmn.io/api/flights/{id}/manifests")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"flightId\": \"QR001-20240101\",\n  \"awbNumbers\": [\n    \"15712345678\",\n    \"15712345679\"\n  ],\n  \"totalPieces\": 20,\n  \"totalWeight\": 1000,\n  \"totalVolume\": 15\n}"

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

{
  "manifestId": "manifest-123",
  "flightId": "QR001-20240101",
  "status": "submitted"
}