curl --request POST \
  --url https://app.manuscritten.com/api/public/single \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "cardDesignId": "c83a2a1a-12c3-4de5-92f7-cc40327b9912",
  "envelopeDesignId": "1f86a2b9-6b7a-42c5-bb77-7c51a5edfe91",
  "senderId": "a8c9b331-0f1a-4f32-9e75-d4a24ce3b129",
  "fontName": "PremiumUltra23",
  "message": "Hola Alfredo, gracias por venir al evento.",
  "name": "Alfredo",
  "surname": "Villacastín",
  "company": "TechShow",
  "address": "C. de José María Lacarra de Miguel, 250",
  "zip": "50008",
  "city": "Zaragoza",
  "province": "",
  "country": "ES"
}
'

import requests

url = "https://app.manuscritten.com/api/public/single"

payload = {
    "cardDesignId": "c83a2a1a-12c3-4de5-92f7-cc40327b9912",
    "envelopeDesignId": "1f86a2b9-6b7a-42c5-bb77-7c51a5edfe91",
    "senderId": "a8c9b331-0f1a-4f32-9e75-d4a24ce3b129",
    "fontName": "PremiumUltra23",
    "message": "Hola Alfredo, gracias por venir al evento.",
    "name": "Alfredo",
    "surname": "Villacastín",
    "company": "TechShow",
    "address": "C. de José María Lacarra de Miguel, 250",
    "zip": "50008",
    "city": "Zaragoza",
    "province": "",
    "country": "ES"
}
headers = {
    "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-API-KEY': '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    cardDesignId: 'c83a2a1a-12c3-4de5-92f7-cc40327b9912',
    envelopeDesignId: '1f86a2b9-6b7a-42c5-bb77-7c51a5edfe91',
    senderId: 'a8c9b331-0f1a-4f32-9e75-d4a24ce3b129',
    fontName: 'PremiumUltra23',
    message: 'Hola Alfredo, gracias por venir al evento.',
    name: 'Alfredo',
    surname: 'Villacastín',
    company: 'TechShow',
    address: 'C. de José María Lacarra de Miguel, 250',
    zip: '50008',
    city: 'Zaragoza',
    province: '',
    country: 'ES'
  })
};

fetch('https://app.manuscritten.com/api/public/single', 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://app.manuscritten.com/api/public/single",
  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([
    'cardDesignId' => 'c83a2a1a-12c3-4de5-92f7-cc40327b9912',
    'envelopeDesignId' => '1f86a2b9-6b7a-42c5-bb77-7c51a5edfe91',
    'senderId' => 'a8c9b331-0f1a-4f32-9e75-d4a24ce3b129',
    'fontName' => 'PremiumUltra23',
    'message' => 'Hola Alfredo, gracias por venir al evento.',
    'name' => 'Alfredo',
    'surname' => 'Villacastín',
    'company' => 'TechShow',
    'address' => 'C. de José María Lacarra de Miguel, 250',
    'zip' => '50008',
    'city' => 'Zaragoza',
    'province' => '',
    'country' => 'ES'
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-API-KEY: <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://app.manuscritten.com/api/public/single"

	payload := strings.NewReader("{\n  \"cardDesignId\": \"c83a2a1a-12c3-4de5-92f7-cc40327b9912\",\n  \"envelopeDesignId\": \"1f86a2b9-6b7a-42c5-bb77-7c51a5edfe91\",\n  \"senderId\": \"a8c9b331-0f1a-4f32-9e75-d4a24ce3b129\",\n  \"fontName\": \"PremiumUltra23\",\n  \"message\": \"Hola Alfredo, gracias por venir al evento.\",\n  \"name\": \"Alfredo\",\n  \"surname\": \"Villacastín\",\n  \"company\": \"TechShow\",\n  \"address\": \"C. de José María Lacarra de Miguel, 250\",\n  \"zip\": \"50008\",\n  \"city\": \"Zaragoza\",\n  \"province\": \"\",\n  \"country\": \"ES\"\n}")

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

	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://app.manuscritten.com/api/public/single")
  .header("X-API-KEY", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"cardDesignId\": \"c83a2a1a-12c3-4de5-92f7-cc40327b9912\",\n  \"envelopeDesignId\": \"1f86a2b9-6b7a-42c5-bb77-7c51a5edfe91\",\n  \"senderId\": \"a8c9b331-0f1a-4f32-9e75-d4a24ce3b129\",\n  \"fontName\": \"PremiumUltra23\",\n  \"message\": \"Hola Alfredo, gracias por venir al evento.\",\n  \"name\": \"Alfredo\",\n  \"surname\": \"Villacastín\",\n  \"company\": \"TechShow\",\n  \"address\": \"C. de José María Lacarra de Miguel, 250\",\n  \"zip\": \"50008\",\n  \"city\": \"Zaragoza\",\n  \"province\": \"\",\n  \"country\": \"ES\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://app.manuscritten.com/api/public/single")

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

request = Net::HTTP::Post.new(url)
request["X-API-KEY"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"cardDesignId\": \"c83a2a1a-12c3-4de5-92f7-cc40327b9912\",\n  \"envelopeDesignId\": \"1f86a2b9-6b7a-42c5-bb77-7c51a5edfe91\",\n  \"senderId\": \"a8c9b331-0f1a-4f32-9e75-d4a24ce3b129\",\n  \"fontName\": \"PremiumUltra23\",\n  \"message\": \"Hola Alfredo, gracias por venir al evento.\",\n  \"name\": \"Alfredo\",\n  \"surname\": \"Villacastín\",\n  \"company\": \"TechShow\",\n  \"address\": \"C. de José María Lacarra de Miguel, 250\",\n  \"zip\": \"50008\",\n  \"city\": \"Zaragoza\",\n  \"province\": \"\",\n  \"country\": \"ES\"\n}"

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

{
  "success": true,
  "cardId": "f64e3bc1-72e9-4c0a-9dc7-34db5e9b45ad"
}

{
  "error": "Bad Request",
  "message": "Campo \"address\" es obligatorio"
}

{
  "error": "Unauthorized",
  "message": "API key inválida o ausente"
}

{
  "error": "Payment Required",
  "message": "Créditos insuficientes"
}

{
  "error": "Too Many Requests",
  "message": "Has superado el límite de peticiones"
}

{
  "error": "Internal Server Error",
  "message": "Ha ocurrido un error inesperado"
}