{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950361,-0.311151,0.000000,0.000000,0.173858,-0.531020,0.829332,0.000000,-0.257504,0.786505,0.561338,0.000000,-1644132.258928,5021738.674865,3560081.988814,1],    "boundingVolume": {    "region": [1.887150,0.595944,1.887250,0.596061,0.000000,8.808950]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1430522.b3dm"}}}