{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949063,-0.315088,0.000000,0.000000,0.176052,-0.530280,0.829342,0.000000,-0.260766,0.785441,0.561323,0.000000,-1664954.954623,5014942.436810,3559985.387693,1],    "boundingVolume": {    "region": [1.891277,0.595931,1.891414,0.596037,0.000000,28.770337]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1373943.b3dm"}}}