{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0f6dd6fd38b5cf13572d652465cd4be9cae5bb3a8ca0c3ea83aed4470f1160cf",
    "signature": "0x48e73bb9482c4a91733605ad9bc330cb33cfc5c7bd2f1b830acd5d03f4a32fbd431040f661f22022cb0837a2f655f01083f19c4eded2535d72a170040952e1771c",
    "signer": "0x18e80443A33c763307bac21D4Ec54B381DFC58cA",
    "userId": "964025330"
  }
}