{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950270,-0.311427,0.000000,0.000000,0.173783,-0.530271,0.829827,0.000000,-0.257888,0.786905,0.560602,0.000000,-1646576.539429,5024272.891387,3555405.161101,1],    "boundingVolume": {    "region": [1.887441,0.595055,1.887540,0.595172,0.000000,8.750799]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1453303.b3dm"}}}