{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x70c1506088b6851344a83f27ebe03ff92e5ce2ca48794a2e24cad782aecdb759",
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    "signer": "0x9531C4bF6aae29d8e300a207cf878b392F7636D1",
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  }
}