{
  "manageEntity": {
    "action": "Save",
    "entityId": "1854620221",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xfc2a9e156217d13120cfa7a9082cd10bbd24044c5048128aef5425b15e346716",
    "signature": "0x9158baeca4d9bcee33fe57620918c41cd5a3852a722fc1c9052675caecf93f713c251aafbf1753d2181d96bbf52f8cae283eb43152d2d2ebdee087d787e79d151b",
    "signer": "0x53d8e61f7BdCd69E26B5AAe8F197464091224DB4",
    "userId": "99786"
  }
}