{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x398b8766fd79f93d696cde3c2bf51ffdebe4d8fc87418685e99cab22dd9570f6",
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    "signer": "0x3496A034C6077e38E7b33210De0C26dE7264Ee7C",
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  }
}