{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950553,-0.310564,0.000000,0.000000,0.173326,-0.530503,0.829774,0.000000,-0.257157,0.787087,0.560682,0.000000,-1641908.987476,5025442.163998,3555907.773205,1],    "boundingVolume": {    "region": [1.886525,0.595152,1.886640,0.595266,0.000000,8.589215]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/7_1450117.b3dm"}}}