{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948765,-0.315982,0.000000,0.000000,0.176015,-0.528501,0.830485,0.000000,-0.261870,0.786287,0.559622,0.000000,-1671993.211881,5020311.307818,3549175.902086,1],    "boundingVolume": {    "region": [1.892240,0.593818,1.892336,0.594042,0.000000,8.774507]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_1234277.b3dm"}}}