{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "547363342",
    "entityType": "User",
    "nonce": "0xf3150e31f192cb5f064483000b84f7048b446b360231080c91b7dfc476969e02",
    "signature": "0xfe713e30106eb1e7c1b807fed34ab6800c118018e550fe8c45be4ecf2f2dcbfd685b981cc1b023db6c47c156419d679b4c9d1efd795a8001b5e59f9f89dc842e1c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}