{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x05ebc5a844491850d42d6155f7019b576ca5376da2edf22bc96360d2c19945e8",
    "signature": "0x181ec2e91babd700ef3d811657a4f8e61eb4f86914033cead53565e842d1c06e1711e188820ba7e2ec85c8b0c4decd6dd8b165e34604cb293f5bf66d0edacdc31c",
    "signer": "0x7DB60852FEB464b7285eD87af392a6163416aAd7",
    "userId": "321234952"
  }
}