{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x53d106c475b75987eafbb5ea697451cf021bfcf2b76e6343cc43e18f25f8d84e",
    "signature": "0x0698f37cef94372e80f7a15bc675be13c0a4143b3518adf5f717a3b08399078a57a05ca5a12c4efae7e47d1ae4cef8840b986c9fbdd1d21dd075ce7859241d6f1c",
    "signer": "0xa60E913f7F24c49Ae89F733c2a49BCbDf9921b6B",
    "userId": "693661795"
  }
}