{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949290,-0.314401,0.000000,0.000000,0.175764,-0.530695,0.829138,0.000000,-0.260133,0.785434,0.561626,0.000000,-1660918.533202,5014905.232461,3561909.793066,1],    "boundingVolume": {    "region": [1.890573,0.596309,1.890672,0.596391,0.000000,8.812643]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/13_1416461.b3dm"}}}