{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.899271,-0.437393,0.000000,0.000000,0.283069,-0.581983,0.762343,0.000000,-0.332503,0.683620,0.649697,0.000000,-2123752.335975,4366392.800086,4121943.070592,1],    "boundingVolume": {    "region": [2.023406,0.707131,2.023581,0.707240,0.000000,42.108763]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_1801592.b3dm"}}}