{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950337,-0.311222,0.000000,0.000000,0.173894,-0.530996,0.829340,0.000000,-0.257566,0.786494,0.561327,0.000000,-1644524.896730,5021662.339065,3560008.805993,1],    "boundingVolume": {    "region": [1.887225,0.595930,1.887325,0.596047,0.000000,8.309917]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/15_1342720.b3dm"}}}