{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa4886b8b5c99fcef25bddbc5be381b8cf4249368131f05eea804330bc79681d1",
    "signature": "0xfc9dbc5117128d81074af48bdd97ecd3cae742995dc7d51c0f17ff50e1fce29a7b51c463532df1ad45d74b8ea41ef373627f26a2f08e43a369d37c1bdae837991c",
    "signer": "0x8EB9E5b548D184382DaDe321741Fad97176bB210",
    "userId": "144851916"
  }
}