[
  {
    "controller": "telegram",
    "when": "message",
    "case": "{{ r/(hi|hello|\\/start)/ig.test(text) and chat.type == \"private\" }}",
    "do": [
      {
        "controller": "telegram",
        "action": "sendMessage",
        "args": {
          "chatId": "{{ chat.id }}",
          "text": "HI! You can config me by `rules.json` file",
          "mode": "Markdown"
        }
      }
    ]
  }
]