{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x835565a027433e640cbf7ac5a1484a327f36da3915f9177917f0d5678e55ac9b",
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    "signer": "0xd24c54f5bbB8d2d7B36CaF97A27c265FF8C7f77b",
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}