{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x374a6763cbef256c93b1b42dd8e9201b13a617afbf6da0ee6d118759e54fa73b",
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    "signer": "0x298Dc0a1B7cD6Fae236928e31663981cFe3f6F69",
    "userId": "496313357"
  }
}