{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948736,-0.316070,0.000000,0.000000,0.176500,-0.529794,0.829557,0.000000,-0.261647,0.785377,0.561003,0.000000,-1670582.045943,5014524.425210,3557951.180994,1],    "boundingVolume": {    "region": [1.892333,0.595485,1.892429,0.595709,0.000000,8.520594]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1146791.b3dm"}}}