{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949083,-0.315025,0.000000,0.000000,0.116156,-0.349945,0.929541,0.000000,-0.292560,0.881402,0.370863,0.000000,-1866848.180551,5624291.658272,2350662.237273,1],    "boundingVolume": {    "region": [1.891226,0.379880,1.891334,0.379996,0.000000,70.386220]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/21_989.b3dm"}}}