{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9f7f837d62f88209f48374b9e07db8531b7c52d43d9431ca61d474651efc3f69",
    "signature": "0xed9042e24ce647a1c65e951a95910980d07f26133b124b99417982831a1b9df240d08154ebe26e76caec0fc6752a7c926da4ed84d2658db39898b1fb2ce1545f1b",
    "signer": "0x1886A26Ed7CaF0E0414431EF5EDCCBd4211C42Ec",
    "userId": "187815229"
  }
}