{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42776",
    "entityType": "User",
    "nonce": "0x681f809dbc1350618af655be11aaf6237ec705f1af79221b4f2f1d7345c4ed2e",
    "signature": "0xd74688ce2c491fe4d55dd4edc45423cc18ee836b35c2a5bb5bca7da21255f81803bd8bec5d3e49790fdfa6ba7f4d12dbdaa996fda8a935d414c1981066d902481c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}