{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x465088b4353f803abee595af82f2472ce21bd031db3e7f650907acb9aab56c49",
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    "signer": "0x1ACb7Dc5984663e6f64B9a24c778e6bC3a58819b",
    "userId": "656174174"
  }
}