Stock Updated Webhook

This is a dummy endpoint that demonstrates the webhook payload structure that will be sent to webhook subscribers when a stock.updated event occurs.

The actual webhooks will be sent asynchronously to the URLs specified in the webhook subscriptions that are subscribed to the stock.updated event type.

The webhook payload includes:

• id: ID of the webhook message
• event: The event type (stock.updated)
• timestamp: When the event occurred
• subscription_id: ID of the webhook subscription
• message: The stock data in the same format as the GET /stock endpoint