{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949331,-0.314278,0.000000,0.000000,0.175697,-0.530723,0.829134,0.000000,-0.260029,0.785465,0.561631,0.000000,-1660257.203001,5015100.543144,3561942.898343,1],    "boundingVolume": {    "region": [1.890443,0.596315,1.890541,0.596397,0.000000,8.803256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/13_1416661.b3dm"}}}