help with storing a list in SQL and converting to jSON

c# i can store any format in SQL the question is what format to store in SQL and what C# method to use to return the following response? ["headInfo",[{ "Fields":"[ "First Name", "Last Name", "Role" ]", "ReportTitle":"Dinner List"}], "data",[ {"First Name":"Shine","Last Name":"LACONA","Role":"Owner"}, {"First Name":"Aaron","Last Name":"Lacona","Role":"Owner"} ]] SQL // 1 column Fields list of fields // 1 column SQL select fn as 'First Name',Ln as 'Last Name','Owner' as Role from mytable currently using this method: string all4 = [login to view URL](new[] { "headInfo", new[]{new { Fields = flds, ReportTitle = rn}} , "data", [login to view URL](data) }); return all4;