The COA looks fake to me, I'm afraid. They are frequently falsified.
If MJ was really sending a genuine sketch to someone via his manager, why would he send a scrappy torn piece of paper....... essentially rubbish? Apologies for a negative response :(
There's a very similar torn piece of squared paper with an 'eye' sketch on it, from wide_savannah on ebay com. I don't think I've ever seen a genuine MJ sig. from this seller....
(There is a separate thread for their sales over the last year or two)