{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.899263,-0.437409,0.000000,0.000000,0.283073,-0.581965,0.762356,0.000000,-0.332521,0.683625,0.649682,0.000000,-2123866.561568,4366424.367848,4121851.393297,1],    "boundingVolume": {    "region": [2.023425,0.707112,2.023599,0.707221,0.000000,18.488426]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_1801547.b3dm"}}}