{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x5a393fb9a7eaa86a2eb0cff8e45d6b1f83c13b2b7c235143d092119e3c53d627",
    "signature": "0xe8a7e4e7bdf104b5d1a848d55e073faa1e2eb7b10795b7ce2effd9fd331857635b006151598a3e0e757854a7b8b1793dddbb3e985f8ae98c021bbfe5641d08421b",
    "signer": "0x72C3229e8a009963fcCB987460463895a2989d71",
    "userId": "109371348"
  }
}