Hello Sir, I just read your requirements and I am ready to do that project for you. I have more than 8 years of experiences in professional development, major with .NET (ASP, MVC, VB, C#), MS Sql platform. I have developed software for POS, restaurants. Allow me to work for you on this project and you will be more than happy with the results.
I am an expert generating this type of Json structures.
My best