{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950726,-0.310033,0.000000,0.000000,0.173461,-0.531924,0.828835,0.000000,-0.256424,0.786332,0.562075,0.000000,-1637238.339895,5020647.387368,3564763.610555,1],    "boundingVolume": {    "region": [1.885941,0.596808,1.886106,0.596977,0.000000,8.819100]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/4/4_1387873.b3dm"}}}