{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "384478",
    "entityType": "User",
    "nonce": "0xccc9c416c2c0c76534d997eb6a1aec40aa951bc06f15cc27fc45f614bac44127",
    "signature": "0x4594a6295ceeb9a34f40426859996de291d0e4c58543e2de71789b20ddf219620a568d2dcad8b3a4fef28e7cb8f90f9e59ac16fe18387b2bdd3207c8dab88a771b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}