{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950410,-0.310999,0.000000,0.000000,0.173480,-0.530151,0.829967,0.000000,-0.257578,0.787154,0.560395,0.000000,-1644596.092117,5025862.660954,3554083.535707,1],    "boundingVolume": {    "region": [1.886950,0.594789,1.887132,0.594935,0.000000,8.588506]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/13_1375330.b3dm"}}}