{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "253360517",
    "entityType": "User",
    "nonce": "0xe464dcc1c4cb88bf6dfc34bb4edc8d21e908bf42f944bb9be28771088c75bcbd",
    "signature": "0x659d1b329d48bb175d8be1cb57a3ceaa59a34f690ce120dfcee95601ef164abc168f279cd5ecaf16a079c0dd805c7ffdaa117317db855347aea0d604b2af499d1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}