{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x919a0ed6e6fcd882db069818537a68da0ab53b4aefc3e4fba890840542b4a3cb",
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    "signer": "0x7c8e046dd564f995b682A57C7ce10AD1AA6c2F72",
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  }
}