{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "39377",
    "entityType": "User",
    "nonce": "0xf16c969ea0ab84c718b9ce2b24f35792d6def1fddc8dddda130adfbba0bf8c78",
    "signature": "0xc2e82315fb3a2cffe1cba4b704c772318271b791fe912573f73a1467c17a043670f1d364b14a2a0e0e27678b1b4910630bd0246ea722649d61e794593bee9d301c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}