{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9085b64d9cda722b66d36ac4be38c43a680afddedbfaaba0dfd38f31d44a8493",
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    "signer": "0x77B205f2D6f6E9493aCDeEeD0e838A041887D8d0",
    "userId": "683345984"
  }
}