{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.852946,-0.521999,0.000000,0.000000,0.269353,-0.440123,0.856587,0.000000,-0.446335,0.729310,0.518548,0.000000,-2849349.315566,4655833.639812,3288188.635830,1],    "boundingVolume": {    "region": [2.119943,0.545110,2.120036,0.545194,0.000000,88.702966]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/2_5470.b3dm"}}}