{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "600518017",
    "entityType": "User",
    "nonce": "0x32cc425c09325dfd576674086b509f96730f747e0242c371edb2b708015a0475",
    "signature": "0x3256298c3c47c544d3f757941b9ca7af9e4799c7fbaa851e7e66bb4175660a3b632f28f1ce36bc87f06acf90c2ebce386db72abfbc99c139e0757dfffbad25a01b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}