{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951879,-0.306474,0.000000,0.000000,0.112704,-0.350047,0.929928,0.000000,-0.284738,0.884370,0.369883,0.000000,-1816932.744315,5643218.773244,2344445.718593,1],    "boundingVolume": {    "region": [1.882268,0.378876,1.882298,0.378890,0.000000,6.376726]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/20/15.b3dm"}}}