{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa03e702a2fad0c26e9ff6291a5b0b9a8d38a8da35c1556205e16171edfc3b9cd",
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    "signer": "0xbf8E9a2a34545D0Ff9d02769fD943A905c9560ea",
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  }
}