{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950424,-0.310958,0.000000,0.000000,0.173517,-0.530342,0.829837,0.000000,-0.257503,0.787041,0.560587,0.000000,-1644120.516875,5025145.771853,3555308.785897,1],    "boundingVolume": {    "region": [1.886906,0.595022,1.887089,0.595168,0.000000,8.815021]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/14_1449733.b3dm"}}}