{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948949,-0.315429,0.000000,0.000000,0.176016,-0.529533,0.829827,0.000000,-0.261202,0.785811,0.560602,0.000000,-1667735.516429,5017290.477726,3555403.330705,1],    "boundingVolume": {    "region": [1.891657,0.595018,1.891752,0.595208,0.000000,8.807851]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1075062.b3dm"}}}