{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcc9c5d2e8458f034024161264f3ad588f7a5790cd91b4a666b59159ec7797ced",
    "signature": "0xc68ab9abafcfc6d6c9ed67a32183848be92a06fda6d597f9602e76ac91498bc025272a5a2a61583730dc1eeb141151ffef60ff4498f49d35797598e7470c04ca1c",
    "signer": "0x8B124Ed702C0911A7F86956C9f07fc1C8Cb672FB",
    "userId": "43846061"
  }
}