{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd893849fcf7bede3d3676d2a46fb21e7a9ac68e96f515894cc2f901ff2b9f656",
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    "signer": "0xAAD308Decf736796Eb779281B8DD9679dDb9b113",
    "userId": "806237538"
  }
}