{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390699",
    "entityType": "User",
    "nonce": "0x2a1d6bf115cf529fb43ac67c37e404425c1a862f925e714845e05a4a3bffe05a",
    "signature": "0x84e032f1dd78bc6076391d673bd8b7b30f302feddfb981cc655cb6f64af7905a096d14fb62652ef6855864869c618e3a9fb7cb23494be39d75bd2b2870f214cc1c",
    "signer": "0x5156122E7f53a879786546b3133306b9F7814b9b",
    "userId": "781663071"
  }
}