{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949589,-0.313498,0.000000,0.000000,0.175234,-0.530788,0.829191,0.000000,-0.259402,0.785732,0.561548,0.000000,-1656250.837644,5016804.927001,3561411.468649,1],    "boundingVolume": {    "region": [1.889621,0.596214,1.889720,0.596296,0.000000,8.894543]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/12_1444073.b3dm"}}}