{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.943159,-0.332343,0.000000,0.000000,0.186176,-0.528351,0.828362,0.000000,-0.274718,0.779624,0.562775,0.000000,-1754047.672612,4977830.973692,3569214.303159,1],    "boundingVolume": {    "region": [1.909520,0.597700,1.909645,0.597779,0.000000,8.719412]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1286636.b3dm"}}}