This data representation looks like path coordinates used in vector graphics. It appears to be a sequence of commands and coordinates that define the shape of a path. Here is a brief explanation:

“m” stands for “move to” and indicates the starting point of the path.
“q” stands for “quadratic Bézier curve” and defines a Bézier curve with an anchor point and an end point.
“l” stands for “line to” and draws a line to the specified point.
The pairs of numbers after each command represent coordinates. For example, “m 1129 496” means that the path starts at the position (1129, 496). “q 1123 411 1129 454” means that a square Bézier curve is drawn that has the anchor point (1123, 411) and reaches the end point (1129, 454). And so on for each command in the path.

Now all you need to do is add some faces to the plane so it becomes a cube. I don’t have time to showcase it now but if you’ll struggle, let me know, I can help you tomorrow.

EDIT: I had another idea to use bumpTexture, did a quick forum search and here you go: