{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xfe09ab0824d1adc52bd9d51d557220ec90a8c58cfda1343aa046f4ff3853eed3",
    "signature": "0xd7068662e212ec7796de66d04cc1188175915016376aaf3f51f7129c9a8f19ba39da7b312e4065a017f09d395308ad95ff675e39a2b4e707923e51b311321afe1c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}