{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x515d324c778ab523045e78852d917d1258f84aee806b06607fc928d38befba4d",
    "signature": "0x540a9057412c8cc6d4a27053966c9667e73ba265fa05f19d3f49031fc8e920de5aeeaf69575ad87fbe547127ee17f2f332e2ee44428f8108e539d42996a799ba1c",
    "signer": "0xd743f27Fe67e4d7CAa0d8D48e64a78dD364B7c67",
    "userId": "157919"
  }
}