{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "747793007",
    "entityType": "User",
    "nonce": "0x5b620ffbc50ca82282115f3b9a09bf326d19845c94eb9dc2f214bcc231cfe970",
    "signature": "0x4a7cdaa1b21e02c5d87bb1f665f7a0e2e5c28d1617dbd491c93b6421eb94e66316b66dd140d146deaa5eadedf0ef911fe2f578b85d33eab4f7f7cc9faf0568451b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}