{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950551,-0.310569,0.000000,0.000000,0.173703,-0.531649,0.828961,0.000000,-0.256907,0.786308,0.561888,0.000000,-1640319.687769,5020490.791118,3563575.422172,1],    "boundingVolume": {    "region": [1.886539,0.596617,1.886636,0.596716,0.000000,10.961448]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394296.b3dm"}}}