{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc6693992f4f84674969aee2442db325f329fa5a4bc3722100d9fd3201ffb4e34",
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    "signer": "0x38c17D1B62678f37Fb4Abd9A7e61105E3F20Cb3d",
    "userId": "670838049"
  }
}