{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950464,-0.310833,0.000000,0.000000,0.173855,-0.531614,0.828952,0.000000,-0.257122,0.786228,0.561902,0.000000,-1641698.079831,5019977.087499,3563663.769672,1],    "boundingVolume": {    "region": [1.886817,0.596634,1.886915,0.596733,0.000000,8.239229]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1328080.b3dm"}}}