{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x57295bde6f98e5c8e96cdf65cf4d8c63aea03f8f7e72143100e9dfe11edf809c",
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    "signer": "0x8209874eC619BAb8540cFccC7bA75C5C54267b25",
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  }
}