{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950455,-0.310863,0.000000,0.000000,0.114380,-0.349713,0.929849,0.000000,-0.288791,0.882971,0.370083,0.000000,-1842793.576384,5634294.204706,2345717.141579,1],    "boundingVolume": {    "region": [1.886823,0.379060,1.886971,0.379138,0.000000,28.799661]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_4290.b3dm"}}}