{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/MessageInput",
  "title": "MessageInput",
  "type": "object",
  "properties": {
    "message": {
      "type": "object",
      "properties": {
        "text": {
          "type": "string",
          "description": "Text message to send to the bot."
        },
        "type": {
          "type": "string",
          "enum": [
            "Text",
            "Choice",
            "Transfer"
          ],
          "description": "Type of message."
        },
        "choiceIndex": {
          "type": "integer",
          "description": "Index of selected choice (for Choice type messages)."
        },
        "sequenceId": {
          "type": "integer",
          "description": "Sequence ID for message ordering."
        }
      },
      "required": [
        "text",
        "type"
      ]
    }
  },
  "required": [
    "message"
  ]
}