{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "Message.json",
  "title": "Google Business Message",
  "description": "A message sent or received through the Google Business Messages API.",
  "type": "object",
  "properties": {
    "name": {
      "type": "string",
      "description": "Resource name of the message."
    },
    "messageId": {
      "type": "string",
      "description": "Unique identifier of the message."
    },
    "representative": {
      "type": "object",
      "description": "The representative sending the message.",
      "properties": {
        "representativeType": {
          "type": "string",
          "enum": ["BOT", "HUMAN"]
        },
        "displayName": {
          "type": "string"
        },
        "avatarImage": {
          "type": "string"
        }
      }
    },
    "text": {
      "type": "string",
      "description": "Text content of the message."
    },
    "richCard": {
      "type": "object",
      "description": "Rich card content."
    },
    "suggestions": {
      "type": "array",
      "description": "Suggested replies or actions.",
      "items": {
        "type": "object"
      }
    },
    "fallback": {
      "type": "string",
      "description": "Fallback text for unsupported clients."
    },
    "containsRichText": {
      "type": "boolean",
      "description": "Whether the message contains rich text."
    },
    "createTime": {
      "type": "string",
      "description": "Timestamp of message creation."
    }
  }
}