{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "391615",
    "entityType": "User",
    "nonce": "0xc4c445f63089f3baeee0c57f1705b18f8c136b92faf969de94b975c31c4248fe",
    "signature": "0x45bbe3703eaf26be8f0b6949749f8506e8a07a3783a1f19c9b1257f8a17af1ef74c08188ec8c856a96a6b7a2752cb0595e44a7d3af4ef1d2341d5505eec477911b",
    "signer": "0xd85E4A094e4C057572A9D525C9737051A17ab609",
    "userId": "696716320"
  }
}