{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950527,-0.310641,0.000000,0.000000,0.173366,-0.530480,0.829780,0.000000,-0.257222,0.787073,0.560672,0.000000,-1642327.956068,5025347.884005,3555847.937656,1],    "boundingVolume": {    "region": [1.886572,0.595124,1.886755,0.595270,0.000000,8.784621]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/15_1450023.b3dm"}}}