{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950470,-0.310816,0.000000,0.000000,0.173504,-0.530571,0.829693,0.000000,-0.257341,0.786942,0.560801,0.000000,-1643084.927948,5024517.571385,3556665.982055,1],    "boundingVolume": {    "region": [1.886798,0.595294,1.886898,0.595411,0.000000,8.760952]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/9_1450617.b3dm"}}}