{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950690,-0.310143,0.000000,0.000000,0.173349,-0.531372,0.829213,0.000000,-0.256633,0.786664,0.561515,0.000000,-1638571.872232,5022755.951402,3561202.753691,1],    "boundingVolume": {    "region": [1.886091,0.596166,1.886189,0.596265,0.000000,8.760281]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/1/2_1427372.b3dm"}}}