{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950377,-0.311099,0.000000,0.000000,0.173995,-0.531537,0.828972,0.000000,-0.257349,0.786175,0.561873,0.000000,-1643142.907288,5019637.841108,3563476.997156,1],    "boundingVolume": {    "region": [1.887097,0.596598,1.887195,0.596697,0.000000,8.818831]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/6_1399599.b3dm"}}}