{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "252991",
    "entityType": "User",
    "nonce": "0x1e004f5c90645d8466c111219659299423842916b2c5c4d41810f17a7fc0f9dd",
    "signature": "0x7f530284b9a265675024c6c76133c255db198ad61b94e2566bbf794f859b2b051d06460def714f322a83d9d6b0721619aaeed664cddf9af42333cbb0c6ded66f1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}