{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1687304",
    "entityType": "User",
    "nonce": "0xc890c46b7da8f9c0ca7d4ea2768873ae0aab74deec8249e8acc6cf51ffecbca7",
    "signature": "0x28b20c9f3a5f06b5018596c57e6fe40c7d0fa4a8602607597412dbd3df27243e5e321897d9c1ee0bfb48645f54ca9faa1d7845f8a8a2beba29168ef1dba594391c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}