{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.952211,-0.305442,0.000000,0.000000,0.169315,-0.527836,0.832299,0.000000,-0.253692,0.790882,0.556907,0.000000,-1619765.477363,5049601.411415,3531918.103553,1],    "boundingVolume": {    "region": [1.881145,0.590613,1.881252,0.590701,0.000000,8.632768]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/6/21/30_1321796.b3dm"}}}