{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.899395,-0.437137,0.000000,0.000000,0.282879,-0.582014,0.762390,0.000000,-0.332329,0.683757,0.649642,0.000000,-2122641.689138,4367266.434609,4121591.974109,1],    "boundingVolume": {    "region": [2.023122,0.707058,2.023296,0.707168,0.000000,6.263788]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/20/15_1800694.b3dm"}}}