{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc436f3127aaaee2f7a96f8ed803430914db2d77f739be5bfb476930f3f3d7de9",
    "signature": "0x02c0859e3b0f153eedb6cc41894d9571270a2482850a8d2017f09fbd7dbbebdd67773d3a0c21dfaaf625b6e2981c3c63feb122347084ae396d8f1a85f990f1581b",
    "signer": "0x3c6Aa744893389cd4CBFa53fdEd080B463b6984B",
    "userId": "326811555"
  }
}