{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950509,-0.310697,0.000000,0.000000,0.173702,-0.531401,0.829120,0.000000,-0.257063,0.786426,0.561652,0.000000,-1641314.471092,5021236.790069,3562076.102307,1],    "boundingVolume": {    "region": [1.886674,0.596332,1.886772,0.596431,0.000000,8.782471]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1388766.b3dm"}}}