{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.899288,-0.437357,0.000000,0.000000,0.282972,-0.581843,0.762486,0.000000,-0.332539,0.683762,0.649529,0.000000,-2123978.916793,4367299.251592,4120873.086457,1],    "boundingVolume": {    "region": [2.023367,0.706910,2.023541,0.707019,0.000000,8.528755]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/13_1800646.b3dm"}}}