{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870",
    "entityType": "User",
    "nonce": "0xd501a31dfca06c3bbb4e5754786e5f30f8b4fa97529d42b62d80c83fd8bef13d",
    "signature": "0xd5265c11c09185f980b52e9fe939728552e062a3464ea8e27c205d1d93a7df796cd61895c06ae4e58c9dce7cc6e65029499b63cf1139e0daac5a7f64bb3eceec1c",
    "signer": "0x2413679eD5Aa7730aDf989AFC81d0a69AEB061AB",
    "userId": "670006010"
  }
}