{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950770,-0.309896,0.000000,0.000000,0.172939,-0.530582,0.829804,0.000000,-0.256613,0.787297,0.560637,0.000000,-1638437.560332,5026777.588147,3555623.325330,1],    "boundingVolume": {    "region": [1.885822,0.595097,1.885938,0.595212,0.000000,8.766633]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/7_1448412.b3dm"}}}