{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950461,-0.310842,0.000000,0.000000,0.114367,-0.349698,0.929856,0.000000,-0.288774,0.882984,0.370065,0.000000,-1842687.398740,5634377.022082,2345602.398119,1],    "boundingVolume": {    "region": [1.886801,0.379040,1.886950,0.379119,0.000000,18.855516]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/20/15_4193.b3dm"}}}