{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x953fb1a58d9887124302bda620a4c17688ff1223249a127b7baa2233b9bda291",
    "signature": "0x2fe5ea553d45f3168b96b6564516a5849cf6f83f8297405dc3953bc6c956d426110e9c97782253383d0c717792859111eda412a0b38c31576423b10c25395ed41b",
    "signer": "0x1F5220C8bfa79e3E809a9F1513D077b26ea168b2",
    "userId": "115324862"
  }
}