{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0bf3267a0c69092ba348f7426a845058164617b39e5094a3bf05bf670f5e09d7",
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    "signer": "0x9E24Cd4E019Bcd1a0A64e8156efc4bE0B46e9a92",
    "userId": "697562886"
  }
}