{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254551",
    "entityType": "User",
    "nonce": "0x439dcebd96f951c989cf6647a6dca796ad20d572c07653fa13376296f069b547",
    "signature": "0x0beb0d4391a22df918abec83b4ccc83fdc042f940399cfe184d91f2be319ba954aa99cfecbacb3738e428733e38b7f351c57df28c0a385100bfa0f63139330711c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}