{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0f671b6b14964d0030ce2d4f9afaa02d785c763dde59c1b47aaf2652ee71b589",
    "signature": "0x53d870935eaffb0e72eafc17ac5c11315b201bfea0006d654dfa80a9db5129d2255dd9dadc5922c5c0744b8312533d87f0f4a5586d35e0151c65ac66c71034691b",
    "signer": "0x2b36551b5c82E140f5d2097f92cC2ad9aEbB0396",
    "userId": "808518779"
  }
}