{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333763354",
    "entityType": "User",
    "nonce": "0x3365cc71e821b3a87a48bb8dd181486c19faba567817e3ffaaffcfba01b16661",
    "signature": "0x2696d1ad8e95e6b74a01eb5a0abcb3b3a322e636ffb92f124ab36418545e1fa158e4882c49b7908af78c7ecf095d2d2e80b092e18ae5cf3def822543819a20041c",
    "signer": "0x1011297FAB27Cd869ba8313983bF4793AB784705",
    "userId": "540848139"
  }
}