{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950556,-0.310554,0.000000,0.000000,0.173700,-0.531667,0.828950,0.000000,-0.256891,0.786301,0.561905,0.000000,-1640220.620796,5020446.816898,3563682.252058,1],    "boundingVolume": {    "region": [1.886523,0.596637,1.886621,0.596736,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394598.b3dm"}}}