{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950332,-0.311238,0.000000,0.000000,0.174078,-0.531527,0.828961,0.000000,-0.257460,0.786127,0.561889,0.000000,-1643853.167616,5019330.823841,3563581.178945,1],    "boundingVolume": {    "region": [1.887216,0.596575,1.887368,0.596760,0.000000,8.778951]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/1/4_1399765.b3dm"}}}