{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950710,-0.310083,0.000000,0.000000,0.173324,-0.531409,0.829195,0.000000,-0.256577,0.786663,0.561542,0.000000,-1638215.252905,5022749.413934,3561374.878924,1],    "boundingVolume": {    "region": [1.886027,0.596199,1.886125,0.596297,0.000000,8.732795]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/1/2_1341812.b3dm"}}}