{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "742907554",
    "entityType": "User",
    "nonce": "0x52c0250709825547dd4c1177becbc6ba5b836820559b228ee434884cb665cea7",
    "signature": "0x4d39212a544e689578d826d49593497754e40b40bd3ced3b39344c1a2640a75e30f23c9fe008ad9b0baa883898f3ed98a394d6933634410b18e62e9c9a95c1011c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}