async function checkToken() {
  const url = 'http://git.a-crm.controlsystem.kz';
  const token = '1b3d0d3b5391c67ead8f8dc7380fb7f07434fc64';
  
  const res = await fetch(`${url}/api/v1/user`, {
    headers: { 'Authorization': `token ${token}` }
  });
  if (res.ok) {
    const user = await res.json();
    console.log('Token belongs to:', user.username);
  } else {
    console.error('Failed to check token');
  }
}
checkToken();