{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2aaf6edf7c8b96ef9661d1372a6f3b34e486b93474ffa749764412076e74bdce",
    "signature": "0xde3d705a8f086f85a0a9833aee704620a76f1592905e48561ccf0d1f30d93f077a9f9f3efd110562a9388b68aa6dbbb22b18e48d22ece284bd39a1f112f5a01e1b",
    "signer": "0x0e487A5a78653B2c7409C1fA1f74Acd5f343AA5C",
    "userId": "663827704"
  }
}