{
  "manageEntity": {
    "action": "Save",
    "entityId": "1780269080",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe04a3acdbab8cdff20927bf796e033bd4cf8c805e83febd29624cb99ea659114",
    "signature": "0xe8b40e969796bf40cbd73fdf08e25a0d373cde08af9fe0cfc6957849343d97da3b9f58e91d830beec1b753cfda2009279b59b060823f268cb31e3244a2c9116f1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}