{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950209,-0.311612,0.000000,0.000000,0.173764,-0.529864,0.830090,0.000000,-0.258124,0.787106,0.560210,0.000000,-1648084.022140,5025554.062250,3552911.920197,1],    "boundingVolume": {    "region": [1.887604,0.594574,1.887768,0.594705,0.000000,8.703297]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1375681.b3dm"}}}