{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950433,-0.310930,0.000000,0.000000,0.173540,-0.530468,0.829751,0.000000,-0.257453,0.786967,0.560715,0.000000,-1643801.024154,5024673.268007,3556118.781371,1],    "boundingVolume": {    "region": [1.886918,0.595190,1.887018,0.595307,0.000000,8.812789]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/8_1450380.b3dm"}}}