{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337206",
    "entityType": "User",
    "nonce": "0x398fdee40615322685165c46ce78033e8438c23e424a69e969a2a8f25c121248",
    "signature": "0x8b0661f73a5f59bf0ceb1acdc02b07013698dcd29a9f1d6d09b63e2ab850d6ff1b0901f794e398291eec1d60dc1e4f67d8c3df1286266f2baf4b571bc64da2a51b",
    "signer": "0x5Bc05b706D3864d34607f61EB1cb128EEf4453b8",
    "userId": "673773101"
  }
}