{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950547,-0.310581,0.000000,0.000000,0.173714,-0.531658,0.828953,0.000000,-0.256914,0.786297,0.561900,0.000000,-1640369.857691,5020418.961452,3563653.000278,1],    "boundingVolume": {    "region": [1.886552,0.596632,1.886650,0.596731,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394519.b3dm"}}}