{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950367,-0.311132,0.000000,0.000000,0.173653,-0.530431,0.829751,0.000000,-0.257621,0.786912,0.560715,0.000000,-1644870.830736,5024323.465903,3556118.350850,1],    "boundingVolume": {    "region": [1.887131,0.595190,1.887231,0.595307,0.000000,8.778256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1454299.b3dm"}}}