{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858438,-0.512918,0.000000,0.000000,0.262630,-0.439547,0.858967,0.000000,-0.439800,0.736066,0.514570,0.000000,-2807596.040064,4698895.456950,3262922.676261,1],    "boundingVolume": {    "region": [2.109294,0.540444,2.109459,0.540569,0.000000,44.774900]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_265158.b3dm"}}}