{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9659426dd673d7e764ce15c57932a1f7a28707436fe216303a5b5654cb11ecfe",
    "signature": "0x1e67132352193a2def5be816cc0094d0ea92665b592b57c75ffaeef06bacf7de158d1911329e4107e045ff9d415760b933218c0aeb4dd6aef6f57ae86f9f380d1b",
    "signer": "0x4f24EFcc0f8174B7836f5EBbeBd72AF3f1746E74",
    "userId": "230109234"
  }
}