{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5c89a205a0c55581105a20c98891fb665b4ce7c5466cd7e5f1881f263b134448",
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    "signer": "0xEB3e2a1B0da8c3460277D5183B02cE4da3b8a182",
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  }
}