{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858358,-0.513052,0.000000,0.000000,0.262648,-0.439421,0.859026,0.000000,-0.439946,0.736048,0.514471,0.000000,-2808522.299613,4698781.623512,3262293.647193,1],    "boundingVolume": {    "region": [2.109450,0.540328,2.109615,0.540454,0.000000,10.671233]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/7_252744.b3dm"}}}