{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xae39c5793469aa073f41812af2638fc2f2cadba21f6f0eb4a0436dbf5a7c8c09",
    "signature": "0xa29fab42dbbd44591f871c71e8863524276b5c5818fc8e39759793f6735258032d38e2b20b05c287cca73800e8699e980a96572493d02dd77d560bebcdb1164e1c",
    "signer": "0x08D9b968677f63b0c3F7F0A74b2dcf0B8b0fd093",
    "userId": "760280739"
  }
}