{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "14511",
    "entityType": "User",
    "nonce": "0x75a6cc8ddf700dda1dda4ea9376ffde7633f694a17577d3e41e4bb48d8a97e01",
    "signature": "0x367c1b092a74f1e15891a9124ced3a9253b05bfaa48f028a2c62b58af9dd7baa40276ea2426e4e1c944d6a7506b8e747c8ff5b0e15da68a529034b05680efce01c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}