{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949121,-0.314913,0.000000,0.000000,0.116027,-0.349695,0.929651,0.000000,-0.292491,0.881542,0.370584,0.000000,-1866404.064176,5625182.136142,2348895.379915,1],    "boundingVolume": {    "region": [1.891107,0.379581,1.891215,0.379696,0.000000,52.732610]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/18_74950.b3dm"}}}