{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x125a078d93665ca64909eb02d9a92aa99d5d0dff12bab774d93d531ab0648662",
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    "signer": "0x3F5455af580e6d6e6C362D122a75Bd016C8D1c47",
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  }
}