{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x33aa3bb322918aa949f20b90637ed5e13e729c8a48a81d384b09891578017c0a",
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    "signer": "0x6B2878936294DCEfb186B0793a0bA1b40d6CeE1a",
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  }
}