{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950146,-0.311806,0.000000,0.000000,0.173925,-0.529989,0.829977,0.000000,-0.258249,0.786945,0.560379,0.000000,-1648883.577217,5024526.329495,3553987.099654,1],    "boundingVolume": {    "region": [1.887808,0.594778,1.887972,0.594909,0.000000,8.809282]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1459974.b3dm"}}}