{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950620,-0.310358,0.000000,0.000000,0.173648,-0.531880,0.828825,0.000000,-0.256690,0.786235,0.562091,0.000000,-1638935.280751,5020023.053698,3564862.424676,1],    "boundingVolume": {    "region": [1.886283,0.596827,1.886449,0.596996,0.000000,7.008531]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/7/4_1326908.b3dm"}}}