{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950207,-0.311619,0.000000,0.000000,0.173765,-0.529855,0.830096,0.000000,-0.258131,0.787110,0.560202,0.000000,-1648129.240050,5025576.950921,3552858.925660,1],    "boundingVolume": {    "region": [1.887611,0.594564,1.887774,0.594695,0.000000,8.703297]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1375704.b3dm"}}}