{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949121,-0.314911,0.000000,0.000000,0.116104,-0.349930,0.929553,0.000000,-0.292458,0.881449,0.370832,0.000000,-1866197.278272,5624590.105697,2350466.296244,1],    "boundingVolume": {    "region": [1.891105,0.379847,1.891214,0.379962,0.000000,71.292590]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_453.b3dm"}}}