{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950956,-0.309327,0.000000,0.000000,0.116107,-0.356946,0.926881,0.000000,-0.286437,0.880585,0.377525,0.000000,-1827803.790341,5619170.359019,2392926.733088,1],    "boundingVolume": {    "region": [1.885201,0.387078,1.885362,0.387165,0.000000,14.322847]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/18.b3dm"}}}