{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254245",
    "entityType": "User",
    "nonce": "0xbd428e753b9601e262dbd389c9798616efbe6323aed5e0a3d884a6f3e49a9c46",
    "signature": "0xc45724dd0a21422c79f29d916b457db5dc1a12453a85d528c6782309a6267591605cbdef43471dbebcf363568b420442af4aadb4db3a0968d722cfc3d2716b6f1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}