{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950387,-0.311071,0.000000,0.000000,0.173984,-0.531558,0.828961,0.000000,-0.257322,0.786172,0.561889,0.000000,-1642973.468101,5019618.952150,3563581.027615,1],    "boundingVolume": {    "region": [1.887068,0.596618,1.887165,0.596717,0.000000,8.795234]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/7_1394290.b3dm"}}}