{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xad045587d894f83f136b051d105d9228b6b5e7db9a3fb63d8ab139ca6e25a634",
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    "signer": "0x9742BFcda3E998678A9f313149c705E80899d5c5",
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  }
}