{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949763,-0.312971,0.000000,0.000000,0.115323,-0.349966,0.929637,0.000000,-0.290683,0.882125,0.370621,0.000000,-1854867.644150,5628900.174111,2349125.215222,1],    "boundingVolume": {    "region": [1.889047,0.379586,1.889185,0.379768,0.000000,24.418460]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/8_73246.b3dm"}}}