{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950679,-0.310175,0.000000,0.000000,0.173099,-0.530544,0.829795,0.000000,-0.256841,0.787213,0.560650,0.000000,-1639895.673984,5026241.536223,3555708.356176,1],    "boundingVolume": {    "region": [1.886116,0.595114,1.886231,0.595228,0.000000,8.766509]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_1345847.b3dm"}}}