{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "135721506",
    "entityType": "User",
    "nonce": "0x44cc9ba325c113006c212acb6b8973b2cb84e08785a1e1180e8132379bfe4eab",
    "signature": "0xe887174646721db9a6b5389e19df08d090e147e0fa474237258b5ab5d0ff8f51310d33e6701827650f34506b9c5c4a7c218383d3fea45b97a2a5785eaa71dffe1b",
    "signer": "0x4089d1751487aA665C895419F2578a6Cf33BE481",
    "userId": "728155533"
  }
}