{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948741,-0.316054,0.000000,0.000000,0.176491,-0.529798,0.829557,0.000000,-0.261633,0.785381,0.561003,0.000000,-1670494.337929,5014552.062532,3557953.395212,1],    "boundingVolume": {    "region": [1.892349,0.595580,1.892378,0.595615,0.000000,8.473052]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/15.b3dm"}}}