{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1471974",
    "entityType": "User",
    "nonce": "0x304e5c55eb4670608515983ba1bb8e07736daac3e22e9ebb6cae60b76a4d65bb",
    "signature": "0xef50d8bc9e62bb51fd4001fd2ec89484310e0f6f772a56eaf760256198fefaf1648b05c67e7460bbd97c8c259528117102640922b0ba230ecfd657cdbba243d21c",
    "signer": "0xfEf199273dc1B7112aA0D32cc0DbF797aC6EAfE5",
    "userId": "198179849"
  }
}