{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "163171",
    "entityType": "User",
    "nonce": "0x9db0c51bd998f50138cc8f0c8ce7c9549363b3d80609535591c95762511c49bc",
    "signature": "0x2d97fc592dc6007feb420c8b202456897c2ef9ab4537f7e7a120abebc69a7a7905750e0e24b0402d6ecd74d2165342d9329059f1ead8756420060b69e9dd1ee71b",
    "signer": "0xe3921B88207E6D5BF6f86f1245645Cf17A2BE8c4",
    "userId": "472933117"
  }
}