{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "326049483",
    "entityType": "User",
    "nonce": "0x8f58d2df45213b70013b59c4912d94703235a412135864a9e9a64325106dc3aa",
    "signature": "0x5e8dc323559e386be15d750c311c2f81dba4712111364e4a7ff3031f6e403c0a04373fd6777c71cf70eac719b881db43ad4fa111d40bc4307617fc4bc8c32b531c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}