{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "677485003",
    "entityType": "User",
    "nonce": "0xbccc721d591d02e6d99526a64c0889c7fc5888358f98f3d851abf26d6027a340",
    "signature": "0xaad7cb349da08d893fe52cb6b78b42bb60ed5fe77abb0ff11581f9cd1aeb6003652a264dc94d0729819175c1ebe6312701694a7fe7846e81d35ed8d02ed8a1b21c",
    "signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
    "userId": "803288761"
  }
}