{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb0341ace6520952c7f6e38ec248e750683f779c6b62148512a665ca3f8d437d1",
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    "signer": "0x11c0E39fFA8FB4E16Aa11f58978eAD6b105E9f66",
    "userId": "615749984"
  }
}