{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "542041690",
    "entityType": "User",
    "nonce": "0x34b209c9bc03cb4acb428e10e63d25ccfa0f764e0d016b0b8eee19fef45ab6b5",
    "signature": "0x0f9aa8e207894c533dc2ada25ae5c521b538e19e9256957d07df0855e01c36c10be624a4cb0565e01a19eddd00bb9eb237d31afbd9806d70111b7323af9ae13a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}