{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950434,-0.310928,0.000000,0.000000,0.114408,-0.349720,0.929842,0.000000,-0.288849,0.882945,0.370100,0.000000,-1843165.732462,5634129.338573,2345820.045079,1],    "boundingVolume": {    "region": [1.886891,0.379077,1.887040,0.379156,0.000000,28.799661]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_4403.b3dm"}}}