{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xac6140c4ee085626423d2f163fb52c887f0a8b4584e13da4aff0b2bc347a9334",
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    "signer": "0xE57DeC29dffe1B1E4DE9948F38CFf7201A41587a",
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}