{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd28fb45c173c69247b2c818fd8bce992a39804ae6562df2abf0bf387e9da447e",
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    "signer": "0x332ab1162aA82B8ba48d0246f9F2bE54a69B4915",
    "userId": "119307795"
  }
}