Helo.configure do |config|
  config.access_token = "YOUR_BEARER_TOKEN"
end

id = "550e8400-e29b-41d4-a716-446655440000"
Helo::WebhookEndpoints.retrieve(id)

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "channelId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "url": "<string>",
  "payloadSigningKey": "<string>",
  "enabled": true,
  "additionalHeaders": [
    {
      "name": "<string>",
      "value": "<string>"
    }
  ],
  "events": []
}