Yes. Assuming the person I don't like is someone I already know, because out of the people I don't like, none of them are true scumbags, psychopaths, monsters, etc. Just bleh.
Here's why. It wouldn't be my money, but there's a chance that it could be spent on something good, and that's a chance I'd take. Worst case is the person goes "full greed" and orders me to spend it on themselves and their friends, but in this case the local economy where I live flourishes.
I'd also gamble on the following:
1) Outside checks and balances, social media and police force, to act as an outside conscience on the one giving orders.
2) They might get tired of ordering me around and simply instruct me to spend the rest of the money on a mansion or something.
3) A chance that the relationship between person giving orders and myself positively changes.
*** main gamble ***
4) Potential loopholes exist. Ex. They can tell me how to spend the money, but not how much to spend at any given time. ie. I can vote with the dollar I technically own / become a hard-ass broker. If I don't like the money order, I'll give them a penny for a spending attempt. Ex. Person wants to buy a boat for self. I'll bid a penny, a deal bound to be rejected. Assumes also that money has to be spent, not donated or gifted, so person ordering me to gift money isn't allowed.
This will force negotiations, on any money-related order or unrelated order for the whole contract. If I'm treated very badly. "This monthly budget is $0.01 out of the million. Go nuts." It would then be in my boss' best interest to be more equitable in their dealings with me. First thing I'd negotiate is an exit clause.
5) Extreme measure in a hell scenario is that I can threaten to kill myself, which would make the contract void and the million out of reach.
You get a million dollars, but all of your darkest secrets immediately become known to all your friends/family.