{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949011,-0.315242,0.000000,0.000000,0.115933,-0.349006,0.929922,0.000000,-0.292883,0.881700,0.369898,0.000000,-1868901.133727,5626181.318087,2344542.115121,1],    "boundingVolume": {    "region": [1.891502,0.378883,1.891514,0.378916,0.000000,25.625963]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/7/21.b3dm"}}}