{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124",
    "entityType": "User",
    "nonce": "0x7b9e1199cc25cd5369875c1ec44dcc1cd90e8811992b47e986591af65f3c7952",
    "signature": "0x1eb54b86642409d37f88c54fe97641b1936720e38921d6705a190dd816543a7338eee82af83b356950e60b42e0e4d2216d25bf6fa4fd808190739951c53ad4471b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}