{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950277,-0.311405,0.000000,0.000000,0.173767,-0.530266,0.829833,0.000000,-0.257871,0.786917,0.560593,0.000000,-1646472.520340,5024350.613130,3555343.912789,1],    "boundingVolume": {    "region": [1.887417,0.595043,1.887517,0.595160,0.000000,8.750799]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1453138.b3dm"}}}