{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949496,-0.313778,0.000000,0.000000,0.175422,-0.530829,0.829124,0.000000,-0.259613,0.785592,0.561646,0.000000,-1657598.029452,5015912.098982,3562037.994086,1],    "boundingVolume": {    "region": [1.889916,0.596333,1.890015,0.596415,0.000000,7.619714]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/14_1338123.b3dm"}}}