{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949638,-0.313350,0.000000,0.000000,0.114847,-0.348055,0.930413,0.000000,-0.291280,0.882754,0.368649,0.000000,-1858669.531097,5632886.915342,2336614.661162,1],    "boundingVolume": {    "region": [1.889430,0.377430,1.889599,0.377680,0.000000,12.292463]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/9_15072.b3dm"}}}