Just spent a solid couple hours trying to decode the OP_RETURN and figure out how it might relate to piecing together a private key... Came up with bumpkis. However, I did notice that a transaction previous to the one that funded the address also has a OP_RETURN in it:

https://learnmeabitcoin.com/explorer/tx/40fca7f95058864b1457fb8f626fd02a97aba7f502386ad30f7ca184f5ee81c4

So that's potentially a clue for someone looking to solve the puzzle. Good luck, I'm out.