{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950629,-0.310328,0.000000,0.000000,0.173549,-0.531633,0.829004,0.000000,-0.256721,0.786414,0.561825,0.000000,-1639134.409189,5021162.791722,3563176.674134,1],    "boundingVolume": {    "region": [1.886286,0.596541,1.886384,0.596640,0.000000,11.649337]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/6_1391945.b3dm"}}}