{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5f7ec4f438a4e8dd0fa2a575d3b923cbe43806651906f59c1fed78d49852db91",
    "signature": "0xbf406197f8802958a7084fb66294e2492c4d24520bff7d7401956e3c0a83dabd1cce079dd5bd73089d23ac0ff6581b2024dac5c81a902b339f03d6d4782db3b01b",
    "signer": "0x4Ae361795D851f22E5b3F1736Cd63aB45A019AB5",
    "userId": "368835365"
  }
}