{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8c9e1be35c3a1eee4af3012b14e7125312c9982f5e9bf5247033dccaaf9bf73f",
    "signature": "0x7b01c0ada228b2a8e4f28c0030460d0805dea54130b991baeed62783a366f3a34b1b5c1191de50fb7851644dde49130903ca68da40059f8240161305531f9c0c1c",
    "signer": "0xC4e201BEaDD3933E76e562c99f9F367Ced3f68d7",
    "userId": "533673360"
  }
}