{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950658,-0.310240,0.000000,0.000000,0.173504,-0.531662,0.828994,0.000000,-0.256645,0.786429,0.561839,0.000000,-1638650.624244,5021257.953454,3563264.497891,1],    "boundingVolume": {    "region": [1.886193,0.596558,1.886291,0.596657,0.000000,7.550022]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/6_1392592.b3dm"}}}