{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x74d90690af735e7d6e461eb13850dc9812c6c9262319dac3cc0746c796659b7b",
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    "signer": "0x66F5a69fF2367fbB75Ad87374c17e3299C02Ee22",
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  }
}