{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "994758391",
    "entityType": "User",
    "nonce": "0xb1376ea5008758cb8e8e7653fe4ab0b33443218847d2ea59b57ae3de2414d872",
    "signature": "0xe39a479e907c96a7afcf59c320d8a993f5a155850e4b76148610c8194cffc78e212e93211b36b8cfd257ab478ba2f9896d231bb6476a729428c2a666f841d8cb1b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}