{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948738,-0.316064,0.000000,0.000000,0.176193,-0.528883,0.830204,0.000000,-0.261848,0.785996,0.560041,0.000000,-1671856.517637,5018463.887790,3551834.074186,1],    "boundingVolume": {    "region": [1.892326,0.594323,1.892422,0.594546,0.000000,8.645811]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/9_1212809.b3dm"}}}