{
  "data": {
    "proxy_region_preference": "GB",
    "proxy_is_active": true,
    "message": "Proxy preferences updated successfully"
  }
}

// Using fetch
const updateProxyPrefs = async (accountId, apiToken, prefs) => {
  const response = await fetch(`https://onlyautomator.com/api/proxy/account/${accountId}/preference`, {
    method: 'PUT',
    headers: {
      'Content-Type': 'application/json',
      'Authorization': `Bearer ${apiToken}`
    },
    body: JSON.stringify(prefs)
  });
  
  if (!response.ok) {
     const errorData = await response.json();
     throw new Error(`API Error (${response.status}): ${errorData.error}`);
  }
  return await response.json();
};

// Example usage: Set preferred region to Germany
const preferences = {
  proxy_region_preference: 'DE'
};

updateProxyPrefs('acc123', 'your_api_token', preferences)
  .then(data => console.log('Preferences update result:', data))
  .catch(error => console.error('Error updating preferences:', error));

// Example usage: Deactivate proxy
const deactivatePref = {
  proxy_is_active: false
};

updateProxyPrefs('acc456', 'your_api_token', deactivatePref)
  .then(data => console.log('Deactivation result:', data));