{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x9f8910daa5d28f100f5db280c2d6a45a911b1c5b93c451e41f2b5ee66f01b567",
    "signature": "0xdcd78a9e0a95626aa57cb63bbfe9a49f8da26696112a49c6ed60662277748ee45752fcdef697ff026e59b8571353527a2c10567c822c6c553b579bc4004eeaac1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}