{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.893017,-0.450023,0.000000,0.000000,0.290391,-0.576247,0.763946,0.000000,-0.342829,0.680304,0.647808,0.000000,-2189688.173879,4345177.565396,4109925.678342,1],    "boundingVolume": {    "region": [2.037535,0.704669,2.037639,0.704738,0.000000,30.823479]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/0/15_1920911.b3dm"}}}