{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950661,-0.310230,0.000000,0.000000,0.173384,-0.531312,0.829244,0.000000,-0.256715,0.786670,0.561469,0.000000,-1639093.750758,5022793.536916,3560911.529518,1],    "boundingVolume": {    "region": [1.886183,0.596110,1.886281,0.596209,0.000000,8.760521]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/1_1427274.b3dm"}}}