{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949064,-0.315083,0.000000,0.000000,0.175870,-0.529739,0.829727,0.000000,-0.260884,0.785810,0.560751,0.000000,-1665705.877875,5017290.045976,3556348.905344,1],    "boundingVolume": {    "region": [1.891272,0.595239,1.891409,0.595346,0.000000,8.805649]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/2_1375004.b3dm"}}}