{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950342,-0.311206,0.000000,0.000000,0.173820,-0.530800,0.829480,0.000000,-0.257597,0.786633,0.561118,0.000000,-1644722.053551,5022546.996600,3558678.454321,1],    "boundingVolume": {    "region": [1.887209,0.595677,1.887308,0.595794,0.000000,8.763194]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428754.b3dm"}}}