{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950530,-0.310632,0.000000,0.000000,0.173730,-0.531611,0.828980,0.000000,-0.256965,0.786309,0.561861,0.000000,-1640691.199477,5020493.042730,3563402.385152,1],    "boundingVolume": {    "region": [1.886605,0.596584,1.886703,0.596683,0.000000,15.223519]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/6_1393402.b3dm"}}}