{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950763,-0.309919,0.000000,0.000000,0.173217,-0.531391,0.829228,0.000000,-0.256452,0.786739,0.561492,0.000000,-1637415.814297,5023234.006347,3561061.154503,1],    "boundingVolume": {    "region": [1.885831,0.596078,1.885977,0.596298,0.000000,8.760186]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/14_1423239.b3dm"}}}