{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950361,-0.311148,0.000000,0.000000,0.173847,-0.530994,0.829351,0.000000,-0.257508,0.786525,0.561310,0.000000,-1644155.266447,5021859.941431,3559901.518151,1],    "boundingVolume": {    "region": [1.887147,0.595909,1.887247,0.596026,0.000000,8.806958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1342813.b3dm"}}}