{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311257477",
    "entityType": "User",
    "nonce": "0xeacf62451e04d4a1d785530cce99871674d1255a0c4c998e7e873023c42ccad3",
    "signature": "0x73487858f78b24f487b15299b6e9acab7f4c2d9b5eca25ed8e18acbb0e29e5de00b02cadd977e22b26a7c806b05084e40be4ca4c08e341d86621fd77c21fcb271b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}