{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "251854",
    "entityType": "User",
    "nonce": "0xf638bd9e6641db838d22e72f466ca3a6f402f77ece0c571ed5e6da00a381f2d4",
    "signature": "0x9f32b913f27f71a9afa17dce03eed62bc557c4a6b9cdb540b424f124f2770afc4dd3a21195b01658fe820bdd624a6d2269a7e33dc189c59e05c768f97f2418ef1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}