{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0x03059c3aba688f3279e56a34f277c89d572f81f79dc9028d44938314aa9fef83",
    "signature": "0x0a89712220585516cdf5ac102129db06454e417310ddb86110f21f8d80d773c93e2ee6bf35a2a9e8166ad313c7a824f3aa99b134aa18b3e977f660d6361b54181c",
    "signer": "0x6B9519cF48DB3f140784848EF3Bd17E4CAfA71C6",
    "userId": "868140613"
  }
}