{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x407bae36c8d93e50f2ea1d8dda01312b5733c7670a55f3ee577c9da3c23b00a9",
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    "signer": "0x16d95048A18662ce6952aD867929390497F1803c",
    "userId": "606514460"
  }
}