{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197705",
    "entityType": "User",
    "nonce": "0x7e102572c030f0c11d90f8390f8f62a5a4795c1e6f2bfc52e3b419acdd361253",
    "signature": "0x9cc841cf4adf5bbb03c7dbac87d529eddd7d342f3f2acda103fcc647eb04490840bf232e4eee60ea989d4750530cdbfea32a1770a850453d73d4a43a657c01dd1c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}