{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950094,-0.311965,0.000000,0.000000,0.174260,-0.530711,0.829445,0.000000,-0.258213,0.786393,0.561170,0.000000,-1648659.452645,5021017.041425,3559013.223899,1],    "boundingVolume": {    "region": [1.888007,0.595741,1.888107,0.595857,0.000000,8.583415]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/13_1429052.b3dm"}}}