{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858249,-0.513233,0.000000,0.000000,0.262719,-0.439330,0.859050,0.000000,-0.440114,0.735976,0.514430,0.000000,-2809597.760302,4698322.004666,3262031.329321,1],    "boundingVolume": {    "region": [2.109662,0.540280,2.109826,0.540406,0.000000,54.673166]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_388373.b3dm"}}}