{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.852957,-0.521981,0.000000,0.000000,0.269328,-0.440103,0.856605,0.000000,-0.446328,0.729336,0.518517,0.000000,-2849309.574401,4655995.891487,3287994.634179,1],    "boundingVolume": {    "region": [2.119922,0.545074,2.120014,0.545158,0.000000,211.379700]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/1_21409.b3dm"}}}