{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf618f8b1bd43d94a19ff16adbe99a610d299967e0dc42c89abf9834eb12d4ef2",
    "signature": "0x1338b442e28b37f05818bc04bbcbd16cfd93009e951494d26487e26b62de8193031d90010246cfb7d3f618b932ebeb5d1e93c9495aaca20ad6ea29ae02a760251b",
    "signer": "0xb22fD448F5D1Fa513F7552da2C6d7fce564b6386",
    "userId": "195219688"
  }
}