{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949509,-0.313739,0.000000,0.000000,0.175198,-0.530223,0.829559,0.000000,-0.259718,0.786019,0.561000,0.000000,-1658266.438943,5018623.798386,3557932.639405,1],    "boundingVolume": {    "region": [1.889844,0.595461,1.890006,0.595726,0.000000,8.731721]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1366776.b3dm"}}}