{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950462,-0.310842,0.000000,0.000000,0.173849,-0.531580,0.828975,0.000000,-0.257137,0.786248,0.561868,0.000000,-1641788.215110,5020102.536534,3563446.982904,1],    "boundingVolume": {    "region": [1.886826,0.596593,1.886924,0.596691,0.000000,19.090562]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/6_1393654.b3dm"}}}