{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951226,-0.308494,0.000000,0.000000,0.115665,-0.356646,0.927052,0.000000,-0.285719,0.880999,0.377101,0.000000,-1823221.670894,5621809.102964,2390241.053568,1],    "boundingVolume": {    "region": [1.884324,0.386613,1.884488,0.386716,0.000000,50.877537]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/13_21560.b3dm"}}}