{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584186978",
    "entityType": "User",
    "nonce": "0x67b598f99d5b3dc3239e2f01b0eba939e5fddd8f8eefc131090985e55951847b",
    "signature": "0xe1200fd6a9d98f99af5595913b8494d9ee96d9b6a7335192c0520b5ed09b91d927b5482233f94e0aecb8185b90cd40d318f21d5d29b108a313453ed9bfa169bf1c",
    "signer": "0xA2431a8293fD33C6289244D08A91489fF2C9f18A",
    "userId": "325308787"
  }
}