Do you have any documentation on this you can point to?
Beyond documentation, one good way to understand the meaning of a variable is to look at a few examples and consider the context of where the data originated. As an absurdly simple example of a var marked by asterisks, I suspect *created_at* is a string noting the date and time this record was created at.
Looks like you also cross-posted here:
From: FAQ: Is it OK if I cross-post?
- First, avoid cross-posting to other websites.
- If you must, always link to those other posts, and update with any solutions.
Why? - Not doing so is generally considered to be rude - someone might spend their time answering the question on StackOverflow, for example, when it’s already been answered here. And once you have an answer in one place, it's polite to update all of your questions accordingly.