public ActionResult _getprice([FromBody] JsonElement selectedOptionsJson)
{
    var selectedOptions = JsonSerializer.Deserialize<JsonElement>(
        selectedOptionsJson.GetRawText());
    int ProductId = 0;
    var dictionaryOptions = new Dictionary<string, object>();
    foreach (var property in selectedOptions.EnumerateObject())
    {
        dictionaryOptions[property.Name] = GetObjectFromJsonElement(property.Value);
        if (property.Name == "productId")
        {
            ProductId = Convert.ToInt32(GetObjectFromJsonElement(property.Value));
        }
    }     
    var secondDictionary = dictionaryOptions.ElementAtOrDefault(1).Value;
    return Json(1);
}
`seconddictionary` contains: [![Screenshot][1]][1]
[1]: https://i.stack.imgur.com/bCd5F.png
How can I get key value present in `seconddictionary` in `List<keyvalue>` properties key and value?
public class KeyValue
{
    public string Key { get; set; }
    public object Value { get; set; }
}
It is dynamic variant.

List<KeyValue> keyValueList = dict.Select(kvp => new KeyValue{
Key = kvp.Key,
Value = kvp.Value}).ToList();