{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949084,-0.315022,0.000000,0.000000,0.176185,-0.530801,0.828981,0.000000,-0.260597,0.785114,0.561859,0.000000,-1663879.789049,5012861.734463,3563393.922634,1],    "boundingVolume": {    "region": [1.891226,0.596621,1.891327,0.596643,0.000000,7.643927]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/11_1338434.b3dm"}}}