{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5adc4895f26cffacabaea7a8e9c19de341c726cf670b20d5a61ea7492fac2a90",
    "signature": "0x5e97ddd19c374771ba6fe45590f343aaa674dc3021457667216fb1952f01895334350740b598c5be825a215c8158ec201d0678af434bcad8c509850969c52de31c",
    "signer": "0xcbB10338Bd27D90284f9690bf10E523b1390FcDb",
    "userId": "414663508"
  }
}