lit_netherrack_furnace.json

{
    "parent": "block/orientable",
    "textures": {
        "top": "natura:blocks/furnace/netherrack_furnace_top",
        "front": "natura:blocks/furnace/netherrack_furnace_on",
        "side": "natura:blocks/furnace/netherrack_furnace_side"
    }
}