{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "402520233",
    "entityType": "User",
    "nonce": "0x765609f8ba670b31284ffa77569bd7e2b043a46ad8117ddf04a51cbaefd59c70",
    "signature": "0x865e208386fed37f4f3e149cbb2ee50076fbbed8e1b1beb3ddeb9500058ad0a0008303c64f363bd69a70bda4c3bc3a065e14374e1fcbb469dce179a778c2f16e1b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}