{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950365,-0.311138,0.000000,0.000000,0.174029,-0.531568,0.828945,0.000000,-0.257372,0.786138,0.561913,0.000000,-1643294.611254,5019405.093343,3563733.155583,1],    "boundingVolume": {    "region": [1.887138,0.596647,1.887236,0.596746,0.000000,8.694036]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/7_1399973.b3dm"}}}