{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950347,-0.311192,0.000000,0.000000,0.173722,-0.530530,0.829674,0.000000,-0.257645,0.786822,0.560831,0.000000,-1645027.922025,5023747.111303,3556854.910372,1],    "boundingVolume": {    "region": [1.887193,0.595330,1.887293,0.595447,0.000000,8.812426]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/9_1454580.b3dm"}}}