{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.897922,-0.440155,0.000000,0.000000,0.282688,-0.576688,0.766498,0.000000,-0.336440,0.686344,0.644779,0.000000,-2148855.856367,4383697.655182,4090656.402347,1],    "boundingVolume": {    "region": [2.026504,0.700700,2.026631,0.700769,0.000000,8.988583]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_852921.b3dm"}}}