{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0xe09ce3707a765971f6ac427f1c83b8d696614b0359e4d389d580cf38b6ceb1e6",
    "signature": "0xa715c1598fd11f1d0216654a109089b770ef87d94cea3f3d77608e822323e4613aadde9801d71c5402096cdfb5df703b5addd24b69ba593d7e2234170eb1f9631b",
    "signer": "0xd648B38B61b65e4F8df57D4EE65560D8DaacFDb2",
    "userId": "277314120"
  }
}