{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "980331",
    "entityType": "User",
    "nonce": "0xdbfb4a0d7f1db66aa59245c478783056096b62d45f6107092ee821336128e0b7",
    "signature": "0x53b72de4f358ba28aa9a3867c6917115e5e47a1387717d04163ade0e877ce39562ad139cfb4f474347a3bdf7b50b9d8f2642398bac0af1832b712aa234fa8a591c",
    "signer": "0x50030fbe6dD7CF39a4Bf73736736A06Ee3820C31",
    "userId": "339715673"
  }
}