{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858765,-0.512369,0.000000,0.000000,0.262285,-0.439608,0.859041,0.000000,-0.439369,0.736411,0.514446,0.000000,-2804838.463196,4701094.512948,3262131.937809,1],    "boundingVolume": {    "region": [2.108656,0.540299,2.108820,0.540424,0.000000,15.319766]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/7_251051.b3dm"}}}