{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4666c2496e7d839e229bfba03dca8f654dc88182e819d05b78ed9e437b90f846",
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    "signer": "0x9B90A5c34B6571d742aBcD603a49eF5523684826",
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  }
}