{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949777,-0.312927,0.000000,0.000000,0.115654,-0.351026,0.929196,0.000000,-0.290502,0.881715,0.371736,0.000000,-1853718.071803,5626301.499145,2356199.659159,1],    "boundingVolume": {    "region": [1.889000,0.380787,1.889138,0.380969,0.000000,5.731953]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/15_71141.b3dm"}}}