{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x31dcf673b9f5a1c435dbdb17d19ef4162564bccb733b158e1ed86dbcf96a3a96",
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    "signer": "0x685cdEEAF31FaD58A322ab1E9f1aD42Ec48354AB",
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}