{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948560,-0.316598,0.000000,0.000000,0.176498,-0.528806,0.830188,0.000000,-0.262285,0.785834,0.560064,0.000000,-1674649.095274,5017425.266750,3551984.822909,1],    "boundingVolume": {    "region": [1.892889,0.594352,1.892985,0.594575,0.000000,8.800847]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/9_1214648.b3dm"}}}