{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950556,-0.310553,0.000000,0.000000,0.173672,-0.531583,0.829010,0.000000,-0.256909,0.786359,0.561816,0.000000,-1640332.255564,5020813.935451,3563117.422441,1],    "boundingVolume": {    "region": [1.886522,0.596530,1.886620,0.596629,0.000000,12.847205]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/6_1391574.b3dm"}}}