{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389938",
    "entityType": "User",
    "nonce": "0x8dcb4b1c0f4dd1f8c084e725cb30078ce7113f6b4da36bb0832681d8255e8a22",
    "signature": "0xdc2a4f49697d79566ebed0f68c5f9d99928429cf7aedb89ef5eabb6a458c094d7ccc2e3622e9f37bcabcace287cf5a79099f5c3fd419b8f329f3777a9d9774161b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}