{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbab84d45739438564ad7ac8c4c35c8b204a32c6c40307bc23752a49b3f8f1b88",
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    "signer": "0x6E182df59BEf2A1821752f4bA26067E2814AfA7c",
    "userId": "560211766"
  }
}