{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949533,-0.313666,0.000000,0.000000,0.175164,-0.530259,0.829544,0.000000,-0.259653,0.786023,0.561024,0.000000,-1657848.776707,5018654.505821,3558082.946627,1],    "boundingVolume": {    "region": [1.889767,0.595489,1.889929,0.595755,0.000000,8.487408]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1366394.b3dm"}}}