{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0x7a641f3d36d2ecb6a518aa3417d5b80fff5977ac50aca521534a47746da257b7",
    "signature": "0x50b2d8413c0a6224c7b36babf6f1e178b63bb5a68ac51db09ed5a8c0e4faab0f4095335156ba00f72a24504718f81935b94ed0ed17b71a1e31cd279e1748ac821c",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}