{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7d49c57daaf1763deab9cdbec5576cf67c2a9407c5b1683fbac8279b8300742d",
    "signature": "0x830e4c0e8a3e26f3a39ccdfac8621cdd19caa1bdf8e776a05de2d1d068c35296489d7ab800985c2b37efd4a0772ad4ba4e36b975214853a35a655dc0bcd98e061b",
    "signer": "0xcc9cCc523005B394381478381D34DddB8558A28f",
    "userId": "957873025"
  }
}