{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.897605,-0.440801,0.000000,0.000000,0.285928,-0.582236,0.761083,0.000000,-0.334536,0.681216,0.651177,0.000000,-2136750.333772,4351067.357818,4131357.157720,1],    "boundingVolume": {    "region": [2.027212,0.709020,2.027364,0.709247,0.000000,19.173071]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/7_1780050.b3dm"}}}