{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "533199925",
    "entityType": "User",
    "nonce": "0xa27319689316ed7fbb1c69c75bafe99a7bbc2d937354ca0869190a3b64990c02",
    "signature": "0xf5942fdf8b3cc3d327fa35cbdc11b9ed0bb0a33e78c91dfd8986363dfe99c2f2581fb15abed9bb1c1d56d50f9117e192003a69586510005b0f2314d1d7c266931c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}