{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950541,-0.310600,0.000000,0.000000,0.173716,-0.531630,0.828970,0.000000,-0.256935,0.786309,0.561875,0.000000,-1640500.381960,5020492.942666,3563489.788668,1],    "boundingVolume": {    "region": [1.886571,0.596601,1.886669,0.596700,0.000000,15.223519]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/6_1393909.b3dm"}}}