{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc4ec319972387cc18c19e2588df95d001598f4b4a7fc98905992eacc64577b0e",
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    "signer": "0xFc3B4795c6E530Fe6F1e0F17dCe23E1525ac9775",
    "userId": "690668232"
  }
}