{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949568,-0.313561,0.000000,0.000000,0.175104,-0.530273,0.829548,0.000000,-0.259567,0.786056,0.561017,0.000000,-1657301.898622,5018864.363454,3558041.983024,1],    "boundingVolume": {    "region": [1.889683,0.595531,1.889792,0.595697,0.000000,8.464418]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/15.b3dm"}}}