{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951824,-0.306645,0.000000,0.000000,0.114802,-0.356346,0.927275,0.000000,-0.284075,0.881767,0.376548,0.000000,-1812731.631969,5626699.977966,2386732.388292,1],    "boundingVolume": {    "region": [1.882406,0.386053,1.882520,0.386082,0.000000,10.347008]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_34997.b3dm"}}}