{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x149d80b2923d81d4fcc13dff1b3a1348b577cc8bc351ec5b92b24cbe8343ddc0",
    "signature": "0x1031afbd7c9bc01ff3593bf6a38578e6b6d97214855d9b11af22b7b154f8971a0a00b8d52c7d2137cd4d3d61eb81a75c4ce5203a44a8ba164d13279bebf8ceba1b",
    "signer": "0x538B53545E1fb97bC3766E4851D655E9Dd5B6101",
    "userId": "114736985"
  }
}