{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x27496df189dd3ee42262eed6703fbf9d2f9f83d3a253863d900fe97428e936f9",
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    "signer": "0xd38fCd89451DC401cB952D400c57f726f41Ab621",
    "userId": "168021542"
  }
}