{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaa9577b32c0d236b28fefb51ac140fa1d2a06868d92e75ef15c78143708ac9df",
    "signature": "0xb4a26ba9c9db4020ded5e9647cc6d2582b7d5e8510fced0cdfbfc78614955678156998e490a3b88d24f5e6abbdeecfefb8da4ae2e1e74291d62b54a0363f66531b",
    "signer": "0x7D9f617364141DEF03f4445707c0E8B99B787A00",
    "userId": "8914878"
  }
}