{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "19702",
    "entityType": "User",
    "nonce": "0x7bf28b2ab588a49e94f65754fd379f1b3868213551f3212cf28084cdeaf4cd31",
    "signature": "0xa830bb0ddc1b0fdd324b14fa177746430c19a40180d665626a9433441a6166407921c37915a534f971f6d4ffe3df485ae28a3bda512688e4f177210e218533981c",
    "signer": "0x670E4517CCB95F2b528b0D6B0E50DC7a0f51f838",
    "userId": "555604608"
  }
}