{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950475,-0.310802,0.000000,0.000000,0.173816,-0.531552,0.829000,0.000000,-0.257112,0.786282,0.561831,0.000000,-1641629.047454,5020322.662250,3563211.775219,1],    "boundingVolume": {    "region": [1.886784,0.596548,1.886882,0.596647,0.000000,11.896035]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/6_1329256.b3dm"}}}