{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858461,-0.512879,0.000000,0.000000,0.262382,-0.439177,0.859232,0.000000,-0.439904,0.736315,0.514125,0.000000,-2808255.175315,4700477.104311,3260095.181870,1],    "boundingVolume": {    "region": [2.109250,0.539925,2.109414,0.540050,0.000000,81.018233]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/4_219121.b3dm"}}}