{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948767,-0.315977,0.000000,0.000000,0.176142,-0.528894,0.830208,0.000000,-0.261777,0.786024,0.560035,0.000000,-1671404.355819,5018640.278592,3551797.891890,1],    "boundingVolume": {    "region": [1.892234,0.594316,1.892330,0.594539,0.000000,8.745765]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1212785.b3dm"}}}