{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.857699,-0.514152,0.000000,0.000000,0.263145,-0.438974,0.859102,0.000000,-0.440929,0.735549,0.514343,0.000000,-2814800.174827,4695594.616214,3261477.145170,1],    "boundingVolume": {    "region": [2.110733,0.540179,2.110898,0.540304,0.000000,37.442500]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/6_380516.b3dm"}}}