{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.852950,-0.521992,0.000000,0.000000,0.269334,-0.440099,0.856605,0.000000,-0.446338,0.729330,0.518518,0.000000,-2849372.166244,4655955.796301,3287997.152708,1],    "boundingVolume": {    "region": [2.119935,0.545074,2.120027,0.545158,0.000000,144.786500]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/1_4417.b3dm"}}}