{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950742,-0.309984,0.000000,0.000000,0.173217,-0.531270,0.829306,0.000000,-0.256530,0.786796,0.561377,0.000000,-1637913.409382,5023597.099083,3560325.007363,1],    "boundingVolume": {    "region": [1.885899,0.595939,1.886045,0.596158,0.000000,8.817084]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/13_1422749.b3dm"}}}