{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7ca6971944bd173a9e7a64990d1cedcc21fdaff547cb46ee4283a769b85a43f2",
    "signature": "0x61cc604b1ab0d0372e21ef975b333fb4a580b41da629dfd0c2082f1dc6dcaad5177c99f48a7d2190adca0a8807f2fb41ea027b1aa8529c2ae744b1270af8d8391c",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}