{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.857701,-0.514149,0.000000,0.000000,0.263219,-0.439101,0.859015,0.000000,-0.440881,0.735475,0.514490,0.000000,-2814492.000388,4695123.469531,3262414.925481,1],    "boundingVolume": {    "region": [2.110729,0.540351,2.110894,0.540476,0.000000,25.256966]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/7_392471.b3dm"}}}