{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xaaad804d6c016eefeac4db68f674b285b2677b701db8e68129f8eecfe415b808",
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    "signer": "0xcEBe6365bA5B97E3e9059f8cAa42d4326262bf35",
    "userId": "527556935"
  }
}