{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5a632cbc9b7d292c7229b090dc8a72580b038ecaf3b8b068d5b6e87b25267310",
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    "signer": "0x14Cf60a0eab3a24fb7230Cc44B9a9b955d28E2D3",
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  }
}