{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "235412",
    "entityType": "User",
    "nonce": "0x02d0709602b91517f8c082ada5e719d62d87f9a1201c83b18debf39ab49444be",
    "signature": "0xa088607e61efef1e4e51a7569308ee08844422ed34c3d6d08828b7da78910a974eecdd890fd2077958b31d4cf812b5ddee10c5ff01c40d023eea6c7ddab843911b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}