{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328337",
    "entityType": "User",
    "nonce": "0x752087e4ffa8bdebb1fd11fc870a751c75e15463564290096a39e003750db4e4",
    "signature": "0x47f5f67b4ec4a4704c1805cf4a8443961adf6616fe2ae9ed203381663877e5125ce549e80078a59d9bdd96178be9c9b22519d0c00efc826d1d5f056baf43a4dc1b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}