{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948820,-0.315816,0.000000,0.000000,0.176349,-0.529814,0.829577,0.000000,-0.261443,0.785466,0.560973,0.000000,-1669279.461540,5015092.646600,3557762.926738,1],    "boundingVolume": {    "region": [1.892065,0.595450,1.892161,0.595673,0.000000,8.778929]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1070919.b3dm"}}}