curl --request GET \
  --url https://cloudapi.mailercloud.com/v1/contacts/{id} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{}'

import requests

url = "https://cloudapi.mailercloud.com/v1/contacts/{id}"

payload = {}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'GET',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({})
};

fetch('https://cloudapi.mailercloud.com/v1/contacts/{id}', 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://cloudapi.mailercloud.com/v1/contacts/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_POSTFIELDS => json_encode([
    
  ]),
  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://cloudapi.mailercloud.com/v1/contacts/{id}"

	payload := strings.NewReader("{}")

	req, _ := http.NewRequest("GET", 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))

}

{
  "data": {
    "city": "<string>",
    "country": "<string>",
    "custom_fields": {},
    "department": "<string>",
    "dob": "<string>",
    "email": "<string>",
    "firstname": "<string>",
    "industry": "<string>",
    "job_title": "<string>",
    "last_name": "<string>",
    "lead_source": "<string>",
    "list_id": "<string>",
    "middle_name": "<string>",
    "company_name": "<string>",
    "phone": "<string>",
    "salary": "<string>",
    "state": "<string>",
    "user_ip": "<string>",
    "postal_code": "<string>",
    "first_name": "<string>",
    "tags": "<string>"
  }
}

{
  "errors": [
    {
      "field": "",
      "message": "Authorization failed"
    }
  ]
}

{
  "errors": [
    {
      "field": "id",
      "message": "Record not found with the given Id"
    }
  ]
}