{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950757,-0.309937,0.000000,0.000000,0.172987,-0.530652,0.829750,0.000000,-0.256630,0.787234,0.560718,0.000000,-1638549.033827,5026376.099148,3556136.047803,1],    "boundingVolume": {    "region": [1.885866,0.595195,1.885981,0.595309,0.000000,8.419392]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1341239.b3dm"}}}