{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8cc3299ac79573f385d6b64caa4fc3cdea51522c0c7c08ddbf425b1679f647b5",
    "signature": "0x84580ec848b9f0ed4d8a2e28108c442a249fbdb364f306013bdb426ab2566396024f41e1395fbb072abc06779141fa6bcbd7a03b17ad5afb70300033f56bbf481c",
    "signer": "0x7bFDCeBB2A574F5402016eB2E8A4717193054897",
    "userId": "993474417"
  }
}