{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949089,-0.315008,0.000000,0.000000,0.116751,-0.351761,0.928781,0.000000,-0.292302,0.880678,0.372782,0.000000,-1865208.038083,5619698.408277,2362835.964883,1],    "boundingVolume": {    "region": [1.891192,0.381955,1.891330,0.382055,0.000000,4.602610]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/21_65071.b3dm"}}}