{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950449,-0.310880,0.000000,0.000000,0.114386,-0.349712,0.929848,0.000000,-0.288807,0.882965,0.370085,0.000000,-1842894.158232,5634258.345754,2345724.205900,1],    "boundingVolume": {    "region": [1.886841,0.379061,1.886989,0.379139,0.000000,28.799661]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_4310.b3dm"}}}