{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5cf906933f287ada0d686babc4c348353898f81796d63230df51a4e5315d9e67",
    "signature": "0x21ee62eecf86b6f38814032964ae58df2a8299868db54f9cf83a988a454701ae7e2485a5b0603c3f2c7e82e73505a24e9929b312f228fea4ae61491dcfbd72f91b",
    "signer": "0xEa3dcE1dCa958ff05294971CA40a732eA317E7A6",
    "userId": "573967897"
  }
}