{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3d5ebc117327acfee73aea87cd78de904da45fc7d168235b8088c5b2069155dc",
    "signature": "0xca9b1d59f8d1064bbbe77a8e8d775bfd448863b3eda96a7077be874c58ea9c89663b45d101ec1c4ae5057f0bd93a73436ab51e2ba6cc2312f644ead527a9eba01b",
    "signer": "0x7B8ceC5EB9388Ac1045B7a1Ce60AE9235d6C6309",
    "userId": "743587390"
  }
}