Micro SF/F by O. WestinThe message from the stars was very long and complex, but contained instructions how to decode and parse it incrementally.
There was an image, of a very cute furry creature. And a text, which loosely translated said:
"Send cat pics please!'
robryk@MicroSFF If you haven't read it yet, you might enjoy "Cat Pictures Please" by Naomi Kritzer (https://clarkesworldmagazine.com/kritzer_01_15/)
MidgePhoto