{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949077,-0.315043,0.000000,0.000000,0.176186,-0.530766,0.829003,0.000000,-0.260621,0.785129,0.561827,0.000000,-1664036.345303,5012959.648755,3563184.478816,1],    "boundingVolume": {    "region": [1.891248,0.596581,1.891349,0.596603,0.000000,9.607143]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/9_1418714.b3dm"}}}