{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x61c44f4c48d3963d1108aecf854b249a0486b4ccbcfc3476ee4994f6ece53434",
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    "signer": "0x8e2bfA201Be7dA933812C8cD39FB3Db51DcC92b1",
    "userId": "381275433"
  }
}