public static void AddNodes() { var chartService = new ChartService(); var resultAddNodes = chartService.AddNodes(new OptionsAddNodes { ChartId = "AddNodesChartName", Nodes = new List <Dictionary <string, string> > { new Dictionary <string, string> { { "id", "1" }, { "Name", "John Smith" } }, new Dictionary <string, string> { { "id", "2" }, { "pid", "1" }, { "Name", "Jack Daniels" } }, new Dictionary <string, string> { { "id", "3" }, { "pid", "1" }, { "Name", "Mickey Mouse" }, { "tags", "blue,assistant" } }, new Dictionary <string, string> { { "id", "4" }, { "pid", "1" }, { "Name", "Ana Garson" }, { "Photo", "https://cdn.balkan.app/shared/2.jpg" }, { "Country", "USA" }, { "City", "Las Vegas" }, { "JobTitle", "IT Manager" }, { "Email", "*****@*****.**" } } } }); if (!resultAddNodes.IsSuccess) { Console.WriteLine(resultAddNodes.Error); } }