{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50378",
    "entityType": "User",
    "nonce": "0x08e071d73f14c7cbd51eb00521cae69ba499215eff143d53950b29926e923bdf",
    "signature": "0x6d0179be616652cc6e797d7b981e9c2fb494150e60dce24e88083ebd235ed11a718331aebaa217186be3c4451230cd44c81b7e3bc6d1ac2c54d481337e492a141b",
    "signer": "0x6C21Eb86A025E3C8C2e589Dccd23B0D6eB2E383b",
    "userId": "662754824"
  }
}