{
    "type": "object",
    "properties": {
        "messaging_product": {
            "type": "string"
        },
        "contacts": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "input": {
                        "type": "string"
                    },
                    "wa_id": {
                        "type": "string"
                    }
                },
                "required": [
                    "input",
                    "wa_id"
                ]
            }
        },
        "messages": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "id": {
                        "type": "string"
                    },
                    "message_status": {
                        "type": "string"
                    }
                },
                "required": [
                    "id",
                    "message_status"
                ]
            }
        }
    },
    "version": 1
}