{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8f8ea74fabf69ec93954e7460f2960b34114dd44a8e81372c5401bc9933a2db1",
    "signature": "0x86f8c7bb353bbb79d6c9a2ffc7ae2404d85e42b1910593a5cf62f5ccc3dbcac24afb3c24b7a50f928056fc5e9feba330cd71462e7a7a38d2d5a33cacaf662ecf1b",
    "signer": "0xe87C31b64532cB37AF1e437F9764994164E9d583",
    "userId": "701183610"
  }
}