{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949728,-0.313077,0.000000,0.000000,0.115365,-0.349964,0.929632,0.000000,-0.290780,0.882088,0.370632,0.000000,-1855485.888341,5628667.135610,2349194.886085,1],    "boundingVolume": {    "region": [1.889158,0.379598,1.889297,0.379780,0.000000,24.418460]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/8_73299.b3dm"}}}