{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950048,-0.312102,0.000000,0.000000,0.174036,-0.529771,0.830093,0.000000,-0.258531,0.786976,0.560206,0.000000,-1650681.167608,5024718.976734,3552887.522209,1],    "boundingVolume": {    "region": [1.888120,0.594569,1.888283,0.594700,0.000000,16.856485]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/7_1458866.b3dm"}}}