{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4e68b4c7d14473b183d1531157475a3c53f68fb73f9f551c0c9d8c1c7ade87fd",
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    "signer": "0x1b7C16c48046d8550cf2935fB67A1F848D82862b",
    "userId": "552898549"
  }
}