{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "723085841",
    "entityType": "User",
    "nonce": "0x1e1deee5bc6794f67d6872d95905537dbb01a165646711d38516c2a21ba62c76",
    "signature": "0xc8322a12fa953c3f1c5004b754ac445e73b5fbdf6dbe59ad8908bf883a11bf6f7c8b663ad69586a2dc4ef3f411d12e2378209a5d375037c3d61ca646f423305c1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}