{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdfe0c83b90be8f251701736f36bf75bd00f8677b844da6d7f38a9f7962758238",
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    "signer": "0xcf853a25d9894A86C19c2a5A99FC3E20017c012A",
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  }
}