{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.852948,-0.521996,0.000000,0.000000,0.269380,-0.440170,0.856554,0.000000,-0.446315,0.729284,0.518602,0.000000,-2849221.688332,4655666.434861,3288533.629921,1],    "boundingVolume": {    "region": [2.119939,0.545173,2.120032,0.545257,0.000000,78.392900]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/2_4548.b3dm"}}}