{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354403",
    "entityType": "User",
    "nonce": "0xca16cce9250888deff972ffe382046dabe1fd7061b922e9dd0262d63508b79a2",
    "signature": "0xd36841ed429a27690a682d284a6310d417b86d9c187f69768f273ea6a9bbd03103eed7d6166596928260b2b62c747bd5eccd3481ce107c73c44ab807f8db19eb1c",
    "signer": "0x00B1A5981993123Ba22fEbEdBA76D3fC03acf440",
    "userId": "211963616"
  }
}