{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950748,-0.309966,0.000000,0.000000,0.173171,-0.531162,0.829385,0.000000,-0.256540,0.786876,0.561260,0.000000,-1637973.894425,5024106.306641,3559583.574898,1],    "boundingVolume": {    "region": [1.885880,0.595798,1.886026,0.596017,0.000000,8.813958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/12_1422162.b3dm"}}}