{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949104,-0.314962,0.000000,0.000000,0.176056,-0.530524,0.829185,0.000000,-0.260612,0.785326,0.561556,0.000000,-1663975.817631,5014211.163500,3561462.982409,1],    "boundingVolume": {    "region": [1.891144,0.596211,1.891282,0.596318,0.000000,8.262762]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1447133.b3dm"}}}