{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "804508659",
    "entityType": "User",
    "nonce": "0x97446bf558e8bcd074d62491840aa3c5519355569544b476ac4f2dbf46069104",
    "signature": "0xeea90fe9851308e284602a52346c4271e9ffb8aa62f3e6ede1e94856747d0a7a33449c50ca12149efeaef22212ba3c04290ad889e334ff6b52dd39931b3859ae1c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}