{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950548,-0.310579,0.000000,0.000000,0.172134,-0.526828,0.832359,0.000000,-0.257978,0.789559,0.556816,0.000000,-1647127.074363,5041148.061753,3531343.382448,1],    "boundingVolume": {    "region": [1.886513,0.590486,1.886683,0.590610,0.000000,5.544689]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/18_1322395.b3dm"}}}