{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "756544",
    "entityType": "User",
    "nonce": "0xcc7add8bb6e74738ae5b84ac02a2abb8c7ff6701a4ff3b702e0b940011321fb4",
    "signature": "0xb208f1f01208651133b48a30cad097153590dbf5084511c9b356d11b37aea4ee0b290852dd397a6db208739eb6503149dfcb70bc44b94fdb20e8cafe42621e3c1c",
    "signer": "0xf0aE5dc768355f3F6FD6d36eC911c860C8904Fa5",
    "userId": "405896524"
  }
}