{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950525,-0.310648,0.000000,0.000000,0.173779,-0.531732,0.828892,0.000000,-0.256950,0.786220,0.561991,0.000000,-1640600.377189,5019930.333755,3564231.276459,1],    "boundingVolume": {    "region": [1.886622,0.596742,1.886720,0.596841,0.000000,8.804403]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/8_1395532.b3dm"}}}