minecraft-bedrock-json-schemas/source/behavior/items/format/components/hand_equipped.json

{
  "$id": "blockception.minecraft.behavior.1.16.200.items.minecraft:hand_equiped",
  "additionalProperties": false,
  "required": ["texture"],
  "type": "boolean",
  "title": "Hand Equipped",
  "description": "Is this a hand equipped item."
}