{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6ff2ed058f618c1f369336af4336b5478662c2106979ba2c8df635d033158d56",
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    "signer": "0xBEa1dfDBA81a63AaE979F322c34709514594D0D0",
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  }
}