{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949296,-0.314383,0.000000,0.000000,0.175744,-0.530671,0.829158,0.000000,-0.260124,0.785458,0.561597,0.000000,-1660858.250503,5015058.866563,3561722.848599,1],    "boundingVolume": {    "region": [1.890553,0.596273,1.890652,0.596355,0.000000,8.812643]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/13_1448131.b3dm"}}}