{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.899315,-0.437301,0.000000,0.000000,0.282995,-0.581981,0.762372,0.000000,-0.332446,0.683680,0.649663,0.000000,-2123389.818608,4366775.206993,4121726.187636,1],    "boundingVolume": {    "region": [2.023305,0.707086,2.023479,0.707195,0.000000,14.281193]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_1800790.b3dm"}}}