{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948996,-0.315288,0.000000,0.000000,0.176039,-0.529867,0.829609,0.000000,-0.261016,0.785641,0.560926,0.000000,-1666552.486963,5016213.063685,3557463.825299,1],    "boundingVolume": {    "region": [1.891488,0.595451,1.891625,0.595558,0.000000,8.815893]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/4_1071418.b3dm"}}}