{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.952208,-0.305451,0.000000,0.000000,0.169316,-0.527823,0.832307,0.000000,-0.253702,0.790887,0.556895,0.000000,-1619829.112989,5049632.915418,3531844.373732,1],    "boundingVolume": {    "region": [1.881154,0.590599,1.881262,0.590687,0.000000,8.632768]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/6/21/30_1321807.b3dm"}}}