Turn dictionary into manageable code

In my code I have this long dictionary:

static Dictionary<string, Dictionary<string, string>> Translations = new Dictionary<string, Dictionary<string, string>>() {
    ["English"] = new Dictionary<string, string>() {
        ["date0"] = "Tuesday, 22nd January 2019",
        ["time0"] = "8:38 PM",
        ["date1"] = "Saturday, 14th September 2019",
        ["time1"] = "5:26 PM",
        ["date2"] = "Saturday, 28th March 2020",
        ["time2"] = "7:52 AM",
        ["date3"] = "Saturday, 28th March 2020",
        ["time3"] = "1:03 PM",
        ...
    },
    ["Italian"] = new Dictionary<string, string>() {
        ["date0"] = "Martedì, 22 gennaio 2019",
        ["time0"] = "20:38",
        ["date1"] = "Sabato, 14 settembre 2019",
        ["time1"] = "17:26",
        ["date2"] = "Sabato, 28 marzo 2020",
        ["time2"] = "7:52",
        ["date3"] = "Sabato, 28 marzo 2020",
        ["time3"] = "13:03",
        ...
    }
}

As a workaround to a Unity bug (Unity Issue Tracker - [IL2CPP] Build hangs while building a project with a large array of strings), I have to load data from an external file or encode it as a stream of bytes.

You can then read the data into an array (or a dictionary, in my case) yourself and avoid the time/memory expended by the C++ compiler.

How do I accomplish this task?

Use JSON or GRFON format.

I think I need more guidance. Do I make a JSON external file that I would then use to create my dictionary? If so, how do I go from JSON to dictionary? Or should I use JSON in the code? If so, how?

Ok, I got it now. I was able to read from an external JSON file and deserialize it to a dictionary using JSON .NET