{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949070,-0.315065,0.000000,0.000000,0.176054,-0.530327,0.829312,0.000000,-0.260738,0.785419,0.561367,0.000000,-1664776.983764,5014800.574820,3560266.549440,1],    "boundingVolume": {    "region": [1.891253,0.595984,1.891391,0.596090,0.000000,11.857457]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1373469.b3dm"}}}