I am curious what this json structure represents:

attribute_line_ids: [[0, false, {attribute_id: 151, value_ids:[[6, false, [2]]]}]]

This is sent to the server when saving a product and is the part that represents an attribute and its value, thats clear to me. What I don't understand are the integers and booleans ([0, false, ... and [[6, false..)

Can someone explain what these values mean or point me to some documentation that elaborates on this?