{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949083,-0.315025,0.000000,0.000000,0.176181,-0.530785,0.828992,0.000000,-0.260603,0.785123,0.561843,0.000000,-1663918.999835,5012924.659720,3563287.805371,1],    "boundingVolume": {    "region": [1.891229,0.596601,1.891330,0.596623,0.000000,9.660840]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/10_1338522.b3dm"}}}