How to save an edit form with multiple images in blazor

Hi i am learning blazor and am stuck in some point.I have an edit form having functionality to add multiple image for a record.How can i merge list of images and other data  as a single paylod. i have rough code with me but dont know how to create a model for these two list.i will have add/remove selected image also in future

onfilechange for multuiple images

private async Task OnFilesChanged(InputFileChangeEventArgs e)
{
    var maxAllowedFiles = 3000;

    var format = "image/png";

    foreach (var imageFile in e.GetMultipleFiles(maxAllowedFiles))
    {
        var resizedImageFile = await imageFile.RequestImageFileAsync(format,
            100, 100);
        var buffer = new byte[resizedImageFile.Size];
        await resizedImageFile.OpenReadStream().ReadAsync(buffer);
        var imageDataUrl =
            $"data:{format};base64,{Convert.ToBase64String(buffer)}";

        Medias.Add(new MediaVariantUI
        {
            Content = buffer,
            ImageDataUrl = imageDataUrl,
            ContentType = imageFile.ContentType,
            Name = imageFile.Name,
            Size = imageFile.Size,
        });
    }
}

 below is edit form using mudblazor

how i can get one single paylos in HandleSubmit methode? how can i create a model class for these?