{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951985,-0.306146,0.000000,0.000000,0.114819,-0.357039,0.927006,0.000000,-0.283530,0.881657,0.377216,0.000000,-1809251.949388,5626010.449804,2390965.828595,1],    "boundingVolume": {    "region": [1.881912,0.386770,1.881965,0.386806,0.000000,5.757219]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/21.b3dm"}}}