Talk:NBT-data/Entities/@comment-84.202.87.129-20191011225935/@comment-27219153-20191012013649

You need square brackets to contain the HiredNPCInfo:

lotr_summon lotr.Troll ~ ~ ~ {NPCName:Shrek,HiredNPCInfo:[HiringPlayerUUID:b1c41442-ac8c-4cc7-99f7-92868dc714eb]}

Hopefully RainDragonInk likes their Shrek.