{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949535,-0.313661,0.000000,0.000000,0.174562,-0.528445,0.830828,0.000000,-0.260054,0.787253,0.559111,0.000000,-1660400.295054,5026468.131585,3545924.557172,1],    "boundingVolume": {    "region": [1.889762,0.593180,1.889924,0.593446,0.000000,7.454605]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/6_1321572.b3dm"}}}