{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950143,-0.311816,0.000000,0.000000,0.173938,-0.530012,0.829960,0.000000,-0.258252,0.786926,0.560405,0.000000,-1648898.965546,5024406.688872,3554148.014516,1],    "boundingVolume": {    "region": [1.887818,0.594809,1.887982,0.594940,0.000000,8.809282]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1451938.b3dm"}}}