{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "771009880",
    "entityType": "User",
    "nonce": "0xd8ed6af1cbce4ebb0215be44d618a83d9ead60e7995b387c489e073fbf426cb4",
    "signature": "0x23ea6fea867327bee1f2f9f98384178a45a4180f9b007928bdeea9738e7c04742fb58cd5a693c6696528f7c6d867abaa6620b2a1616aa6efd32071a8c2eb45ef1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}