{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950358,-0.311158,0.000000,0.000000,0.173855,-0.530999,0.829346,0.000000,-0.257514,0.786517,0.561317,0.000000,-1644197.574938,5021813.751049,3559946.831133,1],    "boundingVolume": {    "region": [1.887158,0.595918,1.887257,0.596035,0.000000,8.806958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1430313.b3dm"}}}