{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdd51e729903ea923dd1ca3bde5c5328fda5e10ba5f690f50ccd8db9b82d350be",
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    "signer": "0x414134f68b0F7E5c9417768C410ae55BCe933D3d",
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  }
}