{
  "manageEntity": {
    "action": "Save",
    "entityId": "22529891",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x594dec921a5512dd6f6faf6df2f63f325521a704579f42489cfd5a8260d76b12",
    "signature": "0xc1d1178f61477526db2007ce048181fde84732209b0d1ffc45e149fa53d828cf571b6166f575ba656ded3d1a9f582cece92504afb642263219cf9b911cc5fe4c1c",
    "signer": "0xF7F56DF4D8a2Ae2BF9Ca645DC684f84c37BbDaFe",
    "userId": "116272245"
  }
}