[
  {
    "id": "exchange.completed",
    "version": "1",
    "default_locale": "en",
    "parameters": ["first_name", "amount", "currency"],
    "locales": {
      "en": {
        "subject": "Your exchange is complete",
        "html": "<p>Hi {{.first_name}}, your exchange of {{.amount}} {{.currency}} is complete.</p>",
        "text": "Hi {{.first_name}}, your exchange of {{.amount}} {{.currency}} is complete."
      }
    }
  }
]