{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xeb7803b88d7a34f94dc71b301d142fc1cc6f019b354409bd3477b6971b003581",
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    "signer": "0x23Ae8E2241d8d34cC28c882B6aF853c0bB4e384D",
    "userId": "355794093"
  }
}