{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.895087,-0.445892,0.000000,0.000000,0.284349,-0.570803,0.770279,0.000000,-0.342521,0.687578,0.640247,0.000000,-2187647.879933,4391495.380949,4061822.954259,1],    "boundingVolume": {    "region": [2.032901,0.694757,2.033034,0.694882,0.000000,6.887182]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/1/15_977543.b3dm"}}}