{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1f5d3846fa1961596a6e4e60978a6914a4ef6380455187ee04ede3babe52035c",
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    "signer": "0xab776Dd2c8B0830aA8aE43827F906e04819687bb",
    "userId": "845851945"
  }
}