{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950558,-0.310548,0.000000,0.000000,0.173362,-0.530644,0.829676,0.000000,-0.257113,0.786998,0.560827,0.000000,-1641630.459045,5024875.066453,3556831.438762,1],    "boundingVolume": {    "region": [1.886508,0.595327,1.886624,0.595441,0.000000,8.793078]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/9_1450772.b3dm"}}}