{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755263",
    "entityType": "User",
    "nonce": "0x4b66394ca3dc3f6fc1d4d9edd3d4e5c36b2bcaa1f52a6285f8227a56bf8b6fcf",
    "signature": "0x4c113c1dd0aa58b6cb21af8c5c5b18d8566ef7a02cc100e3291c6840cb3db2cb317fe12b6c0af669d390bf4da78306a784594c10f558911e54c1d97af6c3b9e11b",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}