{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xafe04599876e3f78ed64696952a00823072d2caf071608360de29f92e3c8d397",
    "signature": "0x19f2f26c182014e85a3c060d6fd607769c457e3a7e10da949a87ebaa54a4fd9e617d1575c504aaa8acde57e44510164bea352cf6f271abe13c8d3393229e6d481c",
    "signer": "0x4D2D17E9078a257050f14FdD4730a37e4Ee3C62B",
    "userId": "848751401"
  }
}