I am pretty new to unity but I am not new to programming. I am building a Hololens application in Unity 2017.2 and it communicates with a REST api that I built. I am using Unity as a front end more or less and it manages my state. Coming from the web developement world, I have my server converting my models into JSON and I am sending that as a response. For the most part, it works well but since Unity works on an older version of C#, I am having issues working with the JSON data, mainly if the data type is not a string, int, float, or double. For example, if my model contains a date data type I am having issues converting it back into a c# model or even arrays are proving to be a pain. I don’t want to rely on unity packages too much as most I have tried don’t do what I need but I am open to any good ones if you know of any.

My question is, what is the best way to send data from my API to Unity? Should I send xml or a csv instead? Or even a more C# native approach? (If that makes sense)