{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x30dfc8b7b47bfdc2f51cb50fcc76a6cf60244d82d2e5b621f268223f8991ecec",
    "signature": "0x3a0b8e2af90fed5a6dce0a96ad02cc03370406770b1272f47642a9ad87aafc346eb6860e41f0910d82b0b303fa7110a30b5419da2b067b6683eb956cd04b27531b",
    "signer": "0xee24f992a791b330c115904885f2727781B75F8e",
    "userId": "457140696"
  }
}