MessageStreamEvent

{
    "event": "thread.message.created",
    "data": {
        "id": "string",
        "object": "thread.message",
        "created_at": 0,
        "thread_id": "string",
        "status": "in_progress",
        "incomplete_details": {
            "reason": "content_filter"
        },
        "completed_at": 0,
        "incomplete_at": 0,
        "role": "user",
        "content": [
            {
                "type": "image_file",
                "image_file": {
                    "file_id": "string",
                    "detail": "auto"
                }
            }
        ],
        "assistant_id": "string",
        "run_id": "string",
        "attachments": [
            {
                "file_id": "string",
                "tools": [
                    {
                        "type": "code_interpreter"
                    }
                ]
            }
        ],
        "metadata": {
            "property1": "string",
            "property2": "string"
        }
    }
}