{
  "manageEntity": {
    "action": "Save",
    "entityId": "1881282410",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x359374a017350006621b36edd763495a6890f8b8cab755722108f7e3650ea6e1",
    "signature": "0x5d02369bd9b7ab424b3ab16f6201eb0bbc69811ac2a0a88e06baa0a94d3a6246443b76c5f9e81a91e8c75344b225076ffe9f74a60b02481c2c994d81a14bb2d11c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}