{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950051,-0.312095,0.000000,0.000000,0.174270,-0.530497,0.829580,0.000000,-0.258363,0.786487,0.560970,0.000000,-1649615.838033,5021611.309600,3557739.979288,1],    "boundingVolume": {    "region": [1.888112,0.595491,1.888276,0.595622,0.000000,8.612071]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1455852.b3dm"}}}