{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x09af43cb1b94c6f32379e652c60944c6dbe1e918b8dd92740525b53a68e3ad00",
    "signature": "0xc437bda660aa2853d647ba0fba5ba0a7ecfecf4c24548990cb8b5cde80df6de2083f34f9ce8bc816287af479e27ee1c68b43d4cc3db85ec4d606b9294363840b1b",
    "signer": "0x9837C03EAdfA74365Cdf4e01e6840D356104bFab",
    "userId": "911622928"
  }
}