{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949076,-0.315048,0.000000,0.000000,0.176111,-0.530531,0.829169,0.000000,-0.260678,0.785287,0.561580,0.000000,-1664399.713785,5013961.789670,3561614.964776,1],    "boundingVolume": {    "region": [1.891235,0.596240,1.891373,0.596347,0.000000,8.793916]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447730.b3dm"}}}