{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949323,-0.314302,0.000000,0.000000,0.175713,-0.530727,0.829129,0.000000,-0.260048,0.785453,0.561640,0.000000,-1660374.299577,5015022.220602,3561998.218023,1],    "boundingVolume": {    "region": [1.890468,0.596326,1.890567,0.596407,0.000000,8.803256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/13_1416921.b3dm"}}}