{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1416a82fc73472606f63c847876cdac168a12007bfa0439bd458468ac559eb69",
    "signature": "0x55dc0ce4633a7c5adc94988f2bf60b856138e2c3a0b80c14a660a50e930a752d3aab25c192491a30a25e329a9b346a9101904871f42768ff9ceec59e2298dd1a1b",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}