{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "713649918",
    "entityType": "User",
    "nonce": "0x1c62db2f6a999e5e34a009586ad94f0b19a8ab87adc5b85280f9b845f05a7f65",
    "signature": "0xa131e633dd952aee0a304ad129433a7e37573bf700cbb0dc214f50af05050e8966ca9ddb677672dc49cf5e7ef0b6f690a2eaad4e0191b5fa472cade53085181a1c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}