{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949094,-0.314993,0.000000,0.000000,0.116139,-0.349933,0.929548,0.000000,-0.292533,0.881418,0.370846,0.000000,-1866671.845061,5624395.269858,2350555.084768,1],    "boundingVolume": {    "region": [1.891192,0.379862,1.891300,0.379978,0.000000,68.927894]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/21_666.b3dm"}}}