basicMessagesMap

{
    "<message-id>": {
        "id": "string",
        "text": "string",
        "dateCreated": "2025-10-08T15:30:00.451Z",
        "chat": {
            "id": "string"
        },
        "sender": {
            "objectType": "store",
            "id": "string"
        },
        "delivery": {
            "status": "sent"
        }
    }
}