{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x85bac92ff7ebe8460a0b57ad196a9dbf86c66f7dece65b637bab04586cf5c4a6",
    "signature": "0x5af6cd62d996a7ae7d2f3b5826dcb52fccd92e724dbae29db010479ecdb1250b6dfb02f6c69f122ac022f6d5240ec4829350ca0c1db9cee278d7e461788123a81b",
    "signer": "0x039D6A5da9c5D47955AFCccFC47703C228327DB7",
    "userId": "172666475"
  }
}