What type of data interchange format is this?

Question

What type of data interchange format is this? It is used in ways similar to json or xml.

Note that is is incomplete but in the end each square bracket is neatly closed.

[
    [
        [
            "a",
            "b",
        ]
    ],
    [
        [
            "xxxxx",
                [
                    "df",
                    "fg"
                ],
                [
                    [
                        "gh",

Answer 1

This is json as far as I can see, just a lot of nested arrays.

Answer 2

This is just JSON. Take a look at the second image.

Answer 3

That looks like JSON. Could be hard to work with though because it doesn't look like each array element is consistent.