{
  "subject": "Demo workshop",
  "plain": "Event: Demo workshop\nDate: 2026-11-03\nFee: 39\nURL: https://example.invalid/demo",
  "html": "<p><strong>Event:</strong> Demo workshop</p><p><strong>Date:</strong> 2026-11-03</p><p><strong>Fee:</strong> 39</p><p><strong>URL:</strong> <a href=\"https://example.invalid/demo\">https://example.invalid/demo</a></p>"
}