{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "699855727",
    "entityType": "User",
    "nonce": "0x353c5add505b84feb1b760f2b411c4549b817fc69d0a60c4219b6d2ce63f39f5",
    "signature": "0x578997636d9fad139854f0606c6cf9cdd881d2003005181a11d79cec72f664e2026deb1691ef7268e43e5e092a225a76ae9c7498af9bdfa6af0602f5b8eae64c1c",
    "signer": "0xcf135AbEA8b552C3D6DcfC900D43C34507048Eea",
    "userId": "455252061"
  }
}