{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950504,-0.310712,0.000000,0.000000,0.173771,-0.531588,0.828986,0.000000,-0.257033,0.786294,0.561851,0.000000,-1641124.458904,5020395.753924,3563340.360686,1],    "boundingVolume": {    "region": [1.886689,0.596572,1.886787,0.596671,0.000000,18.141249]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_1393072.b3dm"}}}