{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x645c7a2097d3686e4f9779298068a697613cb79b793c2e9441ef09994afacdd8",
    "signature": "0xf110d15ac0908664120c0eccb0ff2adfb5f3a44d49024d268b866fe858c91aa9077c158528868125a3009244684b296fb2267f5e5165ca42d464b6bf8a066a6a1b",
    "signer": "0xD8518cC9A95ee58dA8ac66F2A6719aE12CEa0aCe",
    "userId": "595924827"
  }
}