{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950367,-0.311133,0.000000,0.000000,0.173652,-0.530426,0.829755,0.000000,-0.257622,0.786916,0.560709,0.000000,-1644878.565303,5024345.467815,3556083.919277,1],    "boundingVolume": {    "region": [1.887131,0.595184,1.887231,0.595301,0.000000,8.778256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1454248.b3dm"}}}