{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950544,-0.310589,0.000000,0.000000,0.173717,-0.531652,0.828956,0.000000,-0.256922,0.786298,0.561895,0.000000,-1640416.972016,5020426.151839,3563621.396115,1],    "boundingVolume": {    "region": [1.886560,0.596626,1.886658,0.596725,0.000000,12.343590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394419.b3dm"}}}