{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858250,-0.513232,0.000000,0.000000,0.263020,-0.439835,0.858700,0.000000,-0.439932,0.735674,0.515019,0.000000,-2808438.646031,4696399.272923,3265770.866256,1],    "boundingVolume": {    "region": [2.109660,0.540967,2.109825,0.541092,0.000000,48.306900]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_466309.b3dm"}}}