{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "458118601",
    "entityType": "User",
    "nonce": "0xffc7cbd0371f0ad922e4256173b213a2cca95ee2309d33ab7c6d8da4a15db44d",
    "signature": "0xbf43cda7ec2cd0e6186ebf1b92c54bbacf0d01059a82326281809d7548c9d319648d850f9faa4ceea41aa88a12cd3b77a25d5e83165429d97ce9f6c26c568ebb1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}