{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950476,-0.310797,0.000000,0.000000,0.173453,-0.530453,0.829779,0.000000,-0.257352,0.787030,0.560673,0.000000,-1643153.582822,5025072.556728,3555855.560034,1],    "boundingVolume": {    "region": [1.886778,0.595140,1.886878,0.595257,0.000000,8.787647]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/8_1450030.b3dm"}}}