{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x84ecd2d5bc2010fe090cefb21d0b267d613d1dcca856dbbb36299c9da105d96d",
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    "signer": "0x6F9dD011355c51D7F11774A73530DD23DD827585",
    "userId": "427936163"
  }
}