{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "346670",
    "entityType": "User",
    "nonce": "0x4ae0de07b41d01d99ff3ee50d0b311a38713554abe89caaa32a6a562e6d822ab",
    "signature": "0x5b65c9a2f52b5ad13d771e22d5a596e4fd30b8d5739528ef747caf386288eaf26a43fbce7056f07677d30703ca1ad52f79dde53c1921a7d4dc3f114dba48e2ef1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}