VIllager nbt tag uses

I want to modify the tags on a villager once that specific villager has been traded with. I see that the villager has the uses nbt tag and just as a test i am trying to give myself a stick by using /execute if entity @ e[type=minecraft:villager,nbt={uses:{}} run give @ a minecraft stick i'm not too sure what i can put in the brackets after uses: to make it so it works