{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "163897",
    "entityType": "User",
    "nonce": "0xfd013ffdb267c30abe87dbb0afad68eef95ef7bb9af08d19413be894d3577096",
    "signature": "0x3b5ecd7a6d505cd24f3b4e2b560efc31009e2549c7729ba57f4e20f3ac0f1bf36168b00d75ddf21d6d1149fd8a986b97df77a4db01d2aab42b3dc62cff3582141b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}