{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "703247687",
    "entityType": "User",
    "nonce": "0x5e81f7640e9366b8dee636123ab78ff0ce9999525fb83b49f7b7b5bea74f5f10",
    "signature": "0xe4bc45afb4ac74008b11ea16acba5abd187fdecfe0c574ab3b1769a45d3b078226cae62fb77770a69e96425a321c3864e3f40a0f783f595fcf2b6f49490f7b961b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}