{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6606d62b84b1185551d45c88af10c70d5278bd13924aa0efd03c14bbb2352a25",
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    "signer": "0x495592750EAC33eCa22472369F1d7076ccEaa2EE",
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  }
}