{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950353,-0.311175,0.000000,0.000000,0.173791,-0.530770,0.829506,0.000000,-0.257579,0.786666,0.561080,0.000000,-1644608.529912,5022755.833734,3558437.784993,1],    "boundingVolume": {    "region": [1.887176,0.595631,1.887276,0.595748,0.000000,8.707822]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428515.b3dm"}}}