{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949492,-0.313792,0.000000,0.000000,0.175403,-0.530744,0.829183,0.000000,-0.259643,0.785644,0.561559,0.000000,-1657791.158198,5016243.696205,3561484.844206,1],    "boundingVolume": {    "region": [1.889931,0.596228,1.890030,0.596310,0.000000,8.467209]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1444320.b3dm"}}}