{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949090,-0.315004,0.000000,0.000000,0.175822,-0.529743,0.829734,0.000000,-0.260820,0.785839,0.560741,0.000000,-1665301.139417,5017471.333927,3556283.129178,1],    "boundingVolume": {    "region": [1.891188,0.595227,1.891325,0.595333,0.000000,8.820004]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/2_1375081.b3dm"}}}