{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7d916d60eebf5d806744c41ee02ad6d1b9fb2a525cddf738cf5b2bfc9b4301ab",
    "signature": "0xb9f23d06b95c437bf67b319aeedfde4fe15573b9ce400e0eeeee744b12e2a72072a2c0112907149e6c9a6ee3d126fe0d3d7cc6412320a88cefafcd5956dae3111c",
    "signer": "0x005beD30Af7a301B76fF764D16DA247C754e0535",
    "userId": "902455820"
  }
}