{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948844,-0.315746,0.000000,0.000000,0.116768,-0.350899,0.929105,0.000000,-0.293090,0.880761,0.371966,0.000000,-1870232.965097,5620217.730486,2357657.963343,1],    "boundingVolume": {    "region": [1.891955,0.381020,1.892122,0.381231,0.000000,5.843141]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/9_68618.b3dm"}}}