{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949069,-0.315067,0.000000,0.000000,0.176123,-0.530530,0.829168,0.000000,-0.260693,0.785280,0.561582,0.000000,-1664493.841441,5013918.632586,3561631.619205,1],    "boundingVolume": {    "region": [1.891255,0.596244,1.891392,0.596350,0.000000,8.793916]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447808.b3dm"}}}