{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x24cb6d65432ec76c604d06dce8a49382892145a5f182b195795b000d07ec8956",
    "signature": "0x6dab9ec01fd47b0e4e001a5bf2b836987ea8efda2fcea84e3b180e55cc3a6cfc038b609a2c045a877ccfed9d65ef46f06025dbf9834bec2e49d031f8bf1478ca1c",
    "signer": "0xFa2d4C2518C0BB689b437d226912F37Cd9d98A23",
    "userId": "61154"
  }
}