{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950338,-0.311220,0.000000,0.000000,0.173545,-0.529935,0.830091,0.000000,-0.257799,0.787214,0.560209,0.000000,-1646008.680637,5026239.124289,3552904.967907,1],    "boundingVolume": {    "region": [1.887223,0.594580,1.887322,0.594697,0.000000,8.500748]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/3_1375683.b3dm"}}}