{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf68585bee4076026535522c51f0eaf89b432f2f8081cc197af0ab321db50728a",
    "signature": "0x604f69a983dbc69fafb669f1c517a0289faf88479721b41d14eb2a5cf4b7a9315cad84b58bbc7442e892bda99e10413606306beb4901655e913f8548544479b01c",
    "signer": "0xC4Ae97334FDe4781B569055a7972392eaFa7B0F3",
    "userId": "41565287"
  }
}