Modify Piglin Bartering loot table using commands

I've used this example command to modify the DeathLootTable, but I was wondering what command I could use to replace the bartering loot table? execute as @e[type=minecraft:piglin] run data merge entity @s {DeathLootTable:"minecraft:blocks/diamond_ore"} So instead of DeathLootTable, what do I have to put there to modify the bartering loot?