{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb7bef0f1b445dd09a84d1e03425c1aa23cb67ba038ca3f8962cf1faf2b877083",
    "signature": "0x20e53c45758d1175b30506b8932f8e0990219af1c21a12b3c4ae98f2be246d6f2bcc49f4ed489cf81460e19a3e13bcb36b7931957c5c923b88347545086930d11c",
    "signer": "0x78d65aFe46082ee73a9b9098e0146E88695A642D",
    "userId": "195545022"
  }
}