LIREN

JObject? obj = (JObject?) server[guildId.ToString()];
obj.Add(new JProperty("CustomCommands", new JObject()));
File.WriteAllText("E:\\C#\\DiscordBot\\servers.json", obj.ToString());

var serverConfigurations = File.ReadAllText("E:\\C#\\DiscordBot\\servers.json");
var json = JsonConvert.DeserializeObject<dynamic>(serverConfigurations);

//Путь к переменной. Вывод:
Console.WriteLine(json._905391627751784458.CommandConfigurations.Ping.Embed1.WithFooter.Text.user_id)