{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43430",
    "entityType": "User",
    "nonce": "0x616a532dc2fc8069fcaf9588e06ed707a15f9bf26db3ff31d0462eb3a6108447",
    "signature": "0x4d4150ef1989cc914aab1e05536418fe8ef165724940f70ecef10f7236917e425948a106613865b2e419e63504f54d13ca062dfda07aa0a61741d823b917d0411c",
    "signer": "0x5E915A4D9D9cb7A5693e7CFA960376B24A181Ae1",
    "userId": "864558519"
  }
}