{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950343,-0.311204,0.000000,0.000000,0.173820,-0.530805,0.829477,0.000000,-0.257594,0.786630,0.561122,0.000000,-1644702.615595,5022532.877920,3558707.170695,1],    "boundingVolume": {    "region": [1.887206,0.595682,1.887306,0.595799,0.000000,8.817695]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428791.b3dm"}}}