{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "599112855",
    "entityType": "User",
    "nonce": "0xf4ebd65b2ad2ce0bacaec9410cf973619553e301beb442462415657353f86402",
    "signature": "0x5b417b56cf387537a050c6353af55728a616647e5cab5e2f4c0d416bd738f7b14a98bc0feef82d2a39184040100694dbe5b055580dc0b466e049d2829041b7751b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}