{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x29f0fca3ac4129deff960f3f81003ce6c78d5834cdd81e5c52453c6854a91264",
    "signature": "0x611a00c6e6523c27c47357ccb9e5fac13f0f140a1dbade9ed4d1bd4a782364c063266895bfaac43e438311fe13f072e9b3545189b44773d19c2f135aac5172131c",
    "signer": "0x7DB60852FEB464b7285eD87af392a6163416aAd7",
    "userId": "321234952"
  }
}