{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950505,-0.310708,0.000000,0.000000,0.173721,-0.531442,0.829090,0.000000,-0.257062,0.786394,0.561697,0.000000,-1641312.230138,5021034.718674,3562360.051540,1],    "boundingVolume": {    "region": [1.886685,0.596386,1.886783,0.596485,0.000000,8.782471]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1389030.b3dm"}}}