{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124658",
    "entityType": "User",
    "nonce": "0x646af22cfda5c4bb5bc01506968e5da22b199aa72b01caea0b0c21b8bf4d8d8e",
    "signature": "0x3f4f88e319ac8b02349bba785e75f483c0d1170728fe41e838019e359222902f2eec8fcdf79901bc9f66c212d9130228cef381c8fa5e41fa225faaca3409a1791c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}