{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858348,-0.513067,0.000000,0.000000,0.262648,-0.439403,0.859035,0.000000,-0.439964,0.736048,0.514456,0.000000,-2808638.531982,4698779.148946,3262197.788999,1],    "boundingVolume": {    "region": [2.109469,0.540311,2.109633,0.540436,0.000000,10.671233]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/7_251635.b3dm"}}}