{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x39983b143340898f2f43c2ca57710ce5b7513d0a1b7aaa2416a387d9544758d2",
    "signature": "0xbc29d16376da2a0985a935f5cbc3f97634ae3870d19644df1aabecda3d18e2462f88ab0a9f033992d7c43d6b2bd25d242a8e2019c1e1816ce1c17cdaf8d640971b",
    "signer": "0xFFC5dCB45B1826f1cbb4062a3E63151751CC7C2a",
    "userId": "308159083"
  }
}