wireless-docs/public/assets/minecraft/blockstates/birch_wall_sign.json

{"variants":{"facing=east":{"model":"minecraft:block/birch_wall_sign","y":270},"facing=north":{"model":"minecraft:block/birch_wall_sign","y":180},"facing=south":{"model":"minecraft:block/birch_wall_sign"},"facing=west":{"model":"minecraft:block/birch_wall_sign","y":90}}}