{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x07103796b1bb4913bda36d27ed765f43c8692dc08ca877b6636d804a02360f50",
    "signature": "0xac0e963306fbebd808f9c0c4a4aadf1198e99886e30bccf60920faaebf757b400c78140503c3f99031c4da46734437cff495f93ad4a1bbbf920a57d8533a54531b",
    "signer": "0xc8b59C26109BC380ABC47eBad3DF1FB7d6aBf13C",
    "userId": "37821039"
  }
}