{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2989",
    "entityType": "User",
    "nonce": "0x91e7868ee7a3f9d94444af09c234e20ed9c98f8cd1168dc7bc9524fdf654c346",
    "signature": "0xe9612e07fdda2893bb8fe845c1fa11de68c11a0a85639b089aab057bd60ce7aa4fb4b138b64b3135021e778ca7fa629978d61b78f5b43945e0069e8c7756456a1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}