{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4138",
    "entityType": "User",
    "nonce": "0x7be2f2ec9e0875bbe32f4e8b708283720c5448e81985ec03ef74f2f3bfc7c550",
    "signature": "0xa2a9779153047ecf482fc098f664227d2376169d2cad62c353f2c8593aba951222d60d53fd76d56d5718f4632fcb04096298b08487627d75c4a9d25021c84d0a1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}