{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "233434",
    "entityType": "User",
    "nonce": "0x2616d5ed26f87bc956b20de61662f0aa573f682dd2f8147cc785e0b91fc944df",
    "signature": "0x4d393f42778d567c506715fa100db801d84b167064d6a412e4563d5c0dbd56da4c4a2590425a820675afa6c116c9b716661f37b202eb60c0493a67d05b7967441b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}