{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28155",
    "entityType": "User",
    "nonce": "0x2c19c3c3185f88265e90b0ceaddcad70b9a11b597c6211745efd6908d8aeedf0",
    "signature": "0x8da51ff579bc62c69a001b891b1c26b5a1dcd3d55b549bbd79ead7638a7a1eae630c2c60c7e8754e833b25c9f40715d5777ca041d9e28a3c3ec732aabfae118b1c",
    "signer": "0x345F527120644cd5f6AaFF3800A2aF4498dfe219",
    "userId": "519995777"
  }
}