{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x35639389baa09755c99088697d950bcff053fa732c5b63fab39c3befabb509a2",
    "signature": "0x5b81b1eaad3d3e4140398a2634479130348786653436c169031a046470700dce7b9df810b5a526cfaf741306024d612c593848dda5af571ccdf8c83efce95afe1b",
    "signer": "0x5a9261B73c098a488867446557C98bf8913f89a6",
    "userId": "545395104"
  }
}