{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950505,-0.310709,0.000000,0.000000,0.173780,-0.531618,0.828965,0.000000,-0.257024,0.786274,0.561882,0.000000,-1641069.572774,5020271.187334,3563539.788724,1],    "boundingVolume": {    "region": [1.886687,0.596610,1.886784,0.596709,0.000000,8.230314]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_1394152.b3dm"}}}