{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949057,-0.315103,0.000000,0.000000,0.176131,-0.530489,0.829192,0.000000,-0.260731,0.785294,0.561546,0.000000,-1664734.671811,5014005.335996,3561398.565769,1],    "boundingVolume": {    "region": [1.891293,0.596199,1.891430,0.596306,0.000000,8.634933]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1446913.b3dm"}}}