{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125737",
    "entityType": "User",
    "nonce": "0x8b7a5767607a2dd009fc1c692d198cdfe966ccd69d1d045a4df7e0d87792ec4e",
    "signature": "0xa41b9a75942fa822442670257e3356d0e73228a8b98dc57d75f7389e11f831836411f7e5bc490c581c2143973be91ba455651e6f79bd810758dddc83baa670491b",
    "signer": "0xf954E35976C0aAaEC2968197F2a371Cc99E7C81A",
    "userId": "102143"
  }
}