{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423579542",
    "entityType": "User",
    "nonce": "0xe3f42fe8d7a10cd719f7c94c280190675b1a816b6eaa5efda7608c9314b7716b",
    "signature": "0xc6b3b93ad2591cf0c358a6b3c19b56ab774c09526f9ebbb2f6cb5982cc9cc63922336afd71de060a9ac611ccb35c32f4d9834f741d0e1f0e04535779b00346261b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}