{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306820",
    "entityType": "User",
    "nonce": "0x50ff56871fd2853eed6fa7af9e44f2be324a936b0a75a97465c38e912f7ff73c",
    "signature": "0x48fc16491d5adc8e30667012157c5000953c1f3b6c9ef9caca2b4a656d863ea606b4e8e80d910aa0fbd297bfa9a7e427e937091a24a85868b86fd185d408d6631b",
    "signer": "0xa6030211678990225Ac0a6a2862549d825e7A039",
    "userId": "543439291"
  }
}