curl --request GET \
  --url https://api.courier.com/tenants/{tenant_id}/templates/{template_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "created_at": "<string>",
  "updated_at": "<string>",
  "published_at": "<string>",
  "version": "<string>",
  "data": {
    "routing": {
      "method": "all",
      "channels": [
        "<string>"
      ]
    },
    "content": {
      "version": "<string>",
      "brand": "<string>",
      "elements": [
        {
          "type": "text",
          "channels": [
            "<any>"
          ],
          "ref": "<string>",
          "if": "<string>",
          "loop": "<string>",
          "content": "<string>",
          "align": "left",
          "text_style": "text",
          "color": "<string>",
          "bold": "<string>",
          "italic": "<string>",
          "strikethrough": "<string>",
          "underline": "<string>",
          "locales": {},
          "format": "markdown"
        }
      ]
    }
  }
}