{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950180,-0.311702,0.000000,0.000000,0.173763,-0.529691,0.830201,0.000000,-0.258234,0.787188,0.560045,0.000000,-1648781.173620,5026070.679257,3551864.581771,1],    "boundingVolume": {    "region": [1.887699,0.594375,1.887862,0.594506,0.000000,8.752843]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/6_1378773.b3dm"}}}