{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951989,-0.306133,0.000000,0.000000,0.114814,-0.357041,0.927006,0.000000,-0.283518,0.881661,0.377216,0.000000,-1809176.691379,5626033.518943,2390968.475111,1],    "boundingVolume": {    "region": [1.881838,0.386737,1.882012,0.386840,0.000000,5.757219]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/21_53306.b3dm"}}}