{
"manageEntity": {
"action": "Save",
"entityId": "1592116209",
"entityType": "Track",
"nonce": "0x2ba7aea5f4e1fe3073feb636043518f65e17aa2f7c10ef659bf2bb7d668d3c67",
"signature": "0x36c8b17f69f17fa82ad756d71c1f949fdec65903011a0bffdd826a90a7cce3d608e79a2691ea6c9e1707b9be11686ac1a77e509ae50c1da581d8b2a411f48e831c",
"signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
"userId": "162770660"
}
}