{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd77704bd1b691b9a3fbf2288cec0f603549f1552ea4a62caeb511bc311046d78",
    "signature": "0x810970bdbb4ae1801ae29871439e7eac2326ff9090448dd82be0d5c3bc648ec56e6d5ef81e2aab77f6ae1c13422029bafdd4dd012605cde332b3a7449528a3901c",
    "signer": "0x59b2AdB5457e737F50672cfd7783475958BA125c",
    "userId": "663695959"
  }
}