curl --request GET \
  --url https://api.example.com/partners/referrers/{user_id} \
  --header 'X-API-Key: <api-key>'

import requests

url = "https://api.example.com/partners/referrers/{user_id}"

headers = {"X-API-Key": "<api-key>"}

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

print(response.text)

const options = {method: 'GET', headers: {'X-API-Key': '<api-key>'}};

fetch('https://api.example.com/partners/referrers/{user_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://api.example.com/partners/referrers/{user_id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "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"
	"net/http"
	"io"
)

func main() {

	url := "https://api.example.com/partners/referrers/{user_id}"

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

	req.Header.Add("X-API-Key", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.example.com/partners/referrers/{user_id}")
  .header("X-API-Key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/partners/referrers/{user_id}")

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

request = Net::HTTP::Get.new(url)
request["X-API-Key"] = '<api-key>'

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

{
  "referrer": {
    "id": 123,
    "effective_referral_commission_percent": 123,
    "invited_count": 123,
    "active_referrals": 123,
    "total_earned_kopeks": 123,
    "total_earned_rubles": 123,
    "month_earned_kopeks": 123,
    "month_earned_rubles": 123,
    "created_at": "2023-11-07T05:31:56Z",
    "telegram_id": 123,
    "username": "<string>",
    "first_name": "<string>",
    "last_name": "<string>",
    "referral_code": "<string>",
    "referral_commission_percent": 123,
    "last_activity": "2023-11-07T05:31:56Z"
  },
  "referrals": {
    "total": 123,
    "limit": 123,
    "offset": 123,
    "has_next": true,
    "has_prev": true,
    "current_page": 123,
    "total_pages": 123,
    "items": [
      {
        "id": 123,
        "full_name": "<string>",
        "created_at": "2023-11-07T05:31:56Z",
        "has_made_first_topup": true,
        "balance_kopeks": 123,
        "balance_rubles": 123,
        "total_earned_kopeks": 123,
        "total_earned_rubles": 123,
        "topups_count": 123,
        "days_since_registration": 123,
        "status": "<string>",
        "telegram_id": 123,
        "username": "<string>",
        "last_activity": "2023-11-07T05:31:56Z",
        "days_since_activity": 123
      }
    ]
  }
}

{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>",
      "input": "<unknown>",
      "ctx": {}
    }
  ]
}