{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950104,-0.311934,0.000000,0.000000,0.173914,-0.529715,0.830154,0.000000,-0.258411,0.787080,0.560115,0.000000,-1649914.812753,5025383.946376,3552306.851267,1],    "boundingVolume": {    "region": [1.887943,0.594459,1.888107,0.594590,0.000000,8.766006]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_1458278.b3dm"}}}