{
  "manageEntity": {
    "action": "Save",
    "entityId": "433759554",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x67588f3c61ca4f5474431202d87ba625f995e8d4d67970727d33dd544a0ce707",
    "signature": "0x56af232eaf5ee8d9bed4a07811bf4ca50e475df5a22fbc091bdb9f57bdaf0a317c67f0b2c2f37832d00162f27cbf576e4b5d7aca48f5fe984df17d246569de0f1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}