{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950040,-0.312128,0.000000,0.000000,0.174042,-0.529742,0.830110,0.000000,-0.258557,0.786985,0.560181,0.000000,-1650850.005603,5024778.449293,3552726.049792,1],    "boundingVolume": {    "region": [1.888146,0.594539,1.888310,0.594670,0.000000,16.856485]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1460461.b3dm"}}}