Request for an Example of the 57D Egocentric Motion Input

Hi, thank you for releasing this great project!

I am currently trying to use the Egocentric Motion input, but I am a bit confused about the format of the 57D action representation.

Could you please provide a simple example of the Egocentric Motion input (e.g., a sequence of 57D actions) or explain how each dimension is defined?

In particular, I would like to understand:

What coordinate system is used (camera coordinate, world coordinate, or another convention)?
What is the scale/unit of the translation values (meters, centimeters, normalized values, etc.)?
Are the rotation values represented as Euler angles, axis-angle, quaternions, or another format?
Is any normalization applied to the 57D action before feeding it into the model?

Having a concrete example or a description of the preprocessing would be extremely helpful for reproducing the results.

Thank you very much for your help!