{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8b975802f6fc5cf0da17416100391900946bf95730b273437809da206f957257",
    "signature": "0x2ce9ae539fdaa34ff00c019a078dbea6d4f8f0aded0e696d39e7a45800e9775303481e72bf0703161190026caed8a52b296dc5156b5582d499b0c42d26ce869a1b",
    "signer": "0x66d0Af4A6D17aee8eeb3f04953c1736d90B76F09",
    "userId": "593682731"
  }
}