я тут побаловался чуть-чуть и нашел что то
"credit": "Made with Blockbench",
"textures": {
"0": "block/texture",
"1": "block/texture2",
"2": "block/texture3",
"3": "block/texture4",
"4": "block/texture5",
"5": "block/texture6",
"6": "block/texture7",
"particle": "block/texture"
получается в частях
"0": "block/texture",
"1": "block/texture2",
"2": "block/texture3",
"3": "block/texture4",
"4": "block/texture5",
"5": "block/texture6",
"6": "block/texture7",
указывать путь весь прям, или в текстур паке по типу
assets/minecraft/optifine/cit/blocks/texture
?