{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950654,-0.310253,0.000000,0.000000,0.173142,-0.530529,0.829796,0.000000,-0.256906,0.787193,0.560649,0.000000,-1640309.555702,5026112.556577,3555699.826348,1],    "boundingVolume": {    "region": [1.886198,0.595112,1.886313,0.595226,0.000000,8.476559]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1449862.b3dm"}}}