{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb815f0a0b08be0d5965b34fcdf3b117b03c3aadc3d934a06377df5047e34a53d",
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    "signer": "0x5f0888943c5151AD92380E0b8bae6e39110f041E",
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  }
}