{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951862,-0.306528,0.000000,0.000000,0.112636,-0.349768,0.930040,0.000000,-0.284823,0.884463,0.369596,0.000000,-1817472.988663,5643805.239630,2342626.785781,1],    "boundingVolume": {    "region": [1.882257,0.378514,1.882421,0.378635,0.000000,12.243242]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/12_46458.b3dm"}}}