{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951849,-0.306567,0.000000,0.000000,0.112617,-0.349660,0.930084,0.000000,-0.284873,0.884493,0.369486,0.000000,-1817788.430647,5643995.096485,2341929.226120,1],    "boundingVolume": {    "region": [1.882298,0.378396,1.882462,0.378517,0.000000,27.454553]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/11_45990.b3dm"}}}