{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950472,-0.310809,0.000000,0.000000,0.173833,-0.531591,0.828971,0.000000,-0.257108,0.786253,0.561874,0.000000,-1641607.356587,5020135.776775,3563483.232592,1],    "boundingVolume": {    "region": [1.886791,0.596600,1.886889,0.596698,0.000000,19.090562]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/6_1393885.b3dm"}}}