{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950507,-0.310703,0.000000,0.000000,0.173713,-0.531426,0.829102,0.000000,-0.257061,0.786407,0.561680,0.000000,-1641306.085401,5021114.047625,3562251.798011,1],    "boundingVolume": {    "region": [1.886680,0.596365,1.886777,0.596464,0.000000,8.782471]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1388875.b3dm"}}}