Create a catalog item for an asset (with optional metadata)

curl --location --request POST 'https://api.lootlocker.io/admin/game//catalog/item' \
--header 'Content-Type: application/json' \
--header 'x-auth-token;' \
--data-raw '{
    "game_id": ,
    "catalog_id": "",
    "entity_id": "",
    "entity_kind": "asset",
    "metadata": [
        {
            "key": "asset_variation_id",
            "value": "123"
        },
        {
            "key": "asset_rental_option_id",
            "value": "456"
        }
    ]
}'