{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "274010868",
    "entityType": "User",
    "nonce": "0x77e3826a189272f5c6f8fa701496b8c621ac0b35bfa8c39d531b7dfe8c72824b",
    "signature": "0x761a74b949a43ae750161b36a82df02c860bf76c93fe1fae783d7f994683e35e47d237f91eb7ad1de2026791296752c0a99240fc4f402b328bc20e33892e6f591b",
    "signer": "0x4C0e8973cC8C5BB66d6627C8D489e336f0825A94",
    "userId": "939865626"
  }
}