{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe642c5110c73a110c2625e5222877de134f5fa7808e61aeb85395aeaf863d4bc",
    "signature": "0xbe9e05e486eadcbdc413b2b1438008f163523b966a3fc8cf76bdbfbce5e2146e4053a76b65e11cedeca8fc4a7360d6599d231884d0d1eaf3411463e17eab02f71c",
    "signer": "0xb841D7d7966E43630444A3A9d2F02094fFa66a4d",
    "userId": "150216793"
  }
}