{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949134,-0.314872,0.000000,0.000000,0.116098,-0.349960,0.929543,0.000000,-0.292418,0.881451,0.370859,0.000000,-1865941.509598,5624603.583471,2350635.953231,1],    "boundingVolume": {    "region": [1.891064,0.379876,1.891172,0.379991,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_924.b3dm"}}}