{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950659,-0.310239,0.000000,0.000000,0.173457,-0.531521,0.829095,0.000000,-0.256676,0.786525,0.561690,0.000000,-1638843.085054,5021870.434188,3562319.086152,1],    "boundingVolume": {    "region": [1.886192,0.596378,1.886290,0.596477,0.000000,8.737833]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/4_1388948.b3dm"}}}