{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x07ef823dba3bfaf9f512bbc3719c1f4793a16a842a638809c5d2f931f39f58bd",
    "signature": "0xd1e4a51a1ce97437bb244565544fc32fe171b756f3743545138903ae5d3442604a9d6c7793caf8cea6f937aa8927f79a3f30c9b7039a592acb0e7eb31ef16b301c",
    "signer": "0x247Bd1D668B9808E69f4ad8b7023CC73b4A249ba",
    "userId": "256556644"
  }
}