{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951716,-0.306981,0.000000,0.000000,0.114479,-0.354911,0.927864,0.000000,-0.284569,0.882234,0.375078,0.000000,-1815876.040905,5629660.506542,2377405.384130,1],    "boundingVolume": {    "region": [1.882795,0.384454,1.882836,0.384509,0.000000,8.747519]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/6/12/39.b3dm"}}}