{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0x61617a7f48cc1f884f1f759edb4c206ee57eb79b5f48a6af480c049c7cefc6d0",
    "signature": "0x69103361491182cd0cb4e36c927d12f534a4393b4bbdddaa76e2d72848a0c7cf729c7585516ab9da27c5ea6a1c175f08ff09933f04beee8acdf58f22528295f71c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}