SendMessage

{
  "type": "object",
  "properties": {
    "action": {
      "const": "sendMessage",
      "default": "sendMessage",
      "type": "string"
    },
    "content": {
      "description": "Message text to send",
      "type": "string"
    }
  },
  "required": [
    "action",
    "content"
  ]
}