{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950525,-0.310647,0.000000,0.000000,0.173747,-0.531637,0.828960,0.000000,-0.256971,0.786286,0.561891,0.000000,-1640728.975022,5020345.512515,3563591.564895,1],    "boundingVolume": {    "region": [1.886621,0.596620,1.886719,0.596719,0.000000,14.464368]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/7_1394337.b3dm"}}}