curl --request POST \
  --url https://my.server.express/api/v1/user/integrations/telegram \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": 123,
  "auth_date": 123,
  "hash": "<string>",
  "first_name": "<string>",
  "last_name": "<string>",
  "username": "<string>",
  "photo_url": "<string>"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    id: 123,
    auth_date: 123,
    hash: '<string>',
    first_name: '<string>',
    last_name: '<string>',
    username: '<string>',
    photo_url: '<string>'
  })
};

fetch('https://my.server.express/api/v1/user/integrations/telegram', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://my.server.express/api/v1/user/integrations/telegram"

payload = {
    "id": 123,
    "auth_date": 123,
    "hash": "<string>",
    "first_name": "<string>",
    "last_name": "<string>",
    "username": "<string>",
    "photo_url": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "success": true,
  "data": {
    "telegramId": "<string>",
    "telegramUsername": "<string>"
  }
}

{
  "success": false,
  "error": "<string>"
}

{
  "success": false,
  "error": "<string>"
}

{
  "success": false,
  "error": "<string>"
}

{
  "success": false,
  "error": "<string>"
}

{
  "success": false,
  "error": "<string>"
}