{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950273,-0.311418,0.000000,0.000000,0.173785,-0.530297,0.829810,0.000000,-0.257875,0.786891,0.560628,0.000000,-1646494.167359,5024184.491466,3555567.132972,1],    "boundingVolume": {    "region": [1.887431,0.595086,1.887531,0.595202,0.000000,8.815450]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1453647.b3dm"}}}