{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949259,-0.314496,0.000000,0.000000,0.175329,-0.529204,0.830183,0.000000,-0.260542,0.786407,0.560073,0.000000,-1663521.301232,5021087.780124,3552037.995401,1],    "boundingVolume": {    "region": [1.890641,0.594341,1.890803,0.594606,0.000000,7.916076]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/10_1381984.b3dm"}}}