{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948855,-0.315712,0.000000,0.000000,0.176418,-0.530213,0.829307,0.000000,-0.261271,0.785236,0.561374,0.000000,-1668185.414134,5013635.930336,3560311.104091,1],    "boundingVolume": {    "region": [1.891935,0.595992,1.892072,0.596099,0.000000,8.808038]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/9_1068471.b3dm"}}}