{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "742786650",
    "entityType": "User",
    "nonce": "0x41fc28c7ae395a5b0203610dd2e7a734087d6f21f0d8861a146c9b02a7a23757",
    "signature": "0x7df0dfb454766ce8ed9dd3dc3d4cea33cf20b9fe4f269d2563f18d0d730c6d4b22af5a68cd9be6d47a9e2fd46b94652038ea2b5a1816dfa652796b73391ddab91c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}