{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10449019",
    "entityType": "User",
    "nonce": "0x484b783e2add42d8ac8d165e588503f87574207fe3797f69db8ba486544f0ef2",
    "signature": "0x7664f3b3335723569c70e2e9b565c88d08c5ee6c69dd0d1c17a3a7fcd22bf77a160111ffe533f1945f48f214908d6a012052ce63041214cb19323b6e05f45f6d1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}