{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x271b27d031a7d8aaec8779933d55163f55ac1d03f171de6e5b0d01b2e3f46226",
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    "signer": "0x5A2921c477F2a6508fe6E575Bd316bfe1407606B",
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  }
}