{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa494e01f2ae2bad2e26e029d580d3ffe0e6212da520688835d39e8fa690e97ca",
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    "signer": "0xea79EEd60D97517387a63Acc5fd3BeE2227F1658",
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  }
}