{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6545",
    "entityType": "User",
    "nonce": "0xc0f354f89bbab29ee1157e38143311ff75451d80bea664b3d1516db5cb51c868",
    "signature": "0xc9e8fe3ff973f5cfafede7447361cd0d7298b84e3e3d332046164dc98a3417952da6b9238c1d9d03d69b8c884e47a3d849015de267a20d998d2e4fef16463d651b",
    "signer": "0x3CE307cb27B2Fc2b03Eae311050CA4e8C34Fa57d",
    "userId": "50936"
  }
}