{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858549,-0.512732,0.000000,0.000000,0.262461,-0.439481,0.859052,0.000000,-0.439685,0.736235,0.514427,0.000000,-2806858.363589,4699973.921525,3262010.089700,1],    "boundingVolume": {    "region": [2.109078,0.540276,2.109242,0.540402,0.000000,11.005166]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/7_248923.b3dm"}}}