{
  "type": "notice",
  "title": "Notice Dialog",
  "body": [
    {
      "type": "plain_message",
      "contents": "Welcome to the server! Please read the rules carefully.",
      "width": 200
    },
    {
      "type": "plain_message",
      "contents": "The rules are: blah blah blah.",
      "width": 400
    }
  ],
  "action": {
    "label": "Understood!",
    "id":"whatever",
    "on_submit": {
      "type": "command_template",
      "template": "tellraw @a '$(example) $(extra1) $(extra2)'"
    }
  }
}