{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.899356,-0.437217,0.000000,0.000000,0.282936,-0.582001,0.762379,0.000000,-0.332385,0.683717,0.649655,0.000000,-2122997.471718,4367012.371251,4121677.351950,1],    "boundingVolume": {    "region": [2.023211,0.707076,2.023385,0.707185,0.000000,14.345366]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/20/15_1800745.b3dm"}}}