{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950548,-0.310579,0.000000,0.000000,0.173689,-0.531586,0.829005,0.000000,-0.256929,0.786347,0.561824,0.000000,-1640459.414476,5020737.576334,3563166.149364,1],    "boundingVolume": {    "region": [1.886549,0.596539,1.886647,0.596638,0.000000,12.847205]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/6_1391866.b3dm"}}}