{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb42fb746154d538e61092c1762d97798acfdc243e9339a4206eaf1a50f8e29eb",
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    "signer": "0xcc841B6eA2539A05124134f4aDa4B368Dd77C47f",
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  }
}