{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858548,-0.512734,0.000000,0.000000,0.262465,-0.439485,0.859049,0.000000,-0.439685,0.736231,0.514433,0.000000,-2806858.678882,4699948.006807,3262046.908428,1],    "boundingVolume": {    "region": [2.109080,0.540283,2.109244,0.540408,0.000000,11.005166]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/7_249454.b3dm"}}}