{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd9cd402bc88cba6e28c97ead59c1f4c446321e2f7f21f8c1b92945ea73fe50a5",
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    "signer": "0xe8E97b4C447D470F68cB38793d459912695fe3e2",
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  }
}