{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950517,-0.310672,0.000000,0.000000,0.173749,-0.531593,0.828988,0.000000,-0.257001,0.786305,0.561849,0.000000,-1640919.212242,5020471.445147,3563328.321572,1],    "boundingVolume": {    "region": [1.886648,0.596570,1.886746,0.596669,0.000000,15.223519]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/6_1393005.b3dm"}}}