{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943839579",
    "entityType": "User",
    "nonce": "0x4b888b7d7860c0903512230e2ecf3667dea4f927d7b2269b76144a5d79295e55",
    "signature": "0xc4b8322ba41ab2d5c0c5fa3530aa0382bcd6ab01743335cadb78b6d04b6b784877bf7c0aa3d0d32089ab97e7f2a2fe981bd0633c693ea438674c96f156e457381c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}