{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "817864519",
    "entityType": "User",
    "nonce": "0x2e8b7b990e528831ff90eef43a6a04982c26452387d930b86fd86dcf71cd3604",
    "signature": "0xdd478a4a531fa2231dc61707042691dbb20d576c5c52b0d8c14ba3643eb53e0504262d9ebdd28b53f1a0e508b31402e39693e5667fb9406fb1c3c5b82bd98bb41c",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}