{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x948746704a47ef27cf2687e7cd2fc1246c9d161b9fb3a938f0fb309ad5525e49",
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    "signer": "0x45c372659741cFdb7A44Ee15796caFe53e42a6e3",
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  }
}