{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9b286610c8e7e1a4ce8d9463f1ab2687f3664b45dfafc690ef969fcf5960a5f5",
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    "signer": "0xdE514d4453008BE0255A05508A3b1876C4a6BC71",
    "userId": "613795948"
  }
}