{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x7e60e0f3788cb0c41815115f6464356882c2187ab9b77efb8eb4e694971504db",
    "signature": "0x912eb34fff79f44039a0bbcdfd14db787fd9e0ba4aa960548ce1445b8fdb011a129ad99d2d542f6fa766ee1a3aa064e1b15edff4a8ee36d0339814e2e7f1d8bc1b",
    "signer": "0xF623b3A237501F7AD70f3E063969743b886B5067",
    "userId": "563864758"
  }
}