{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950761,-0.309926,0.000000,0.000000,0.172969,-0.530616,0.829776,0.000000,-0.256629,0.787262,0.560678,0.000000,-1638541.276313,5026557.127060,3555885.426121,1],    "boundingVolume": {    "region": [1.885854,0.595147,1.885969,0.595262,0.000000,8.761658]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1341320.b3dm"}}}