{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139019",
    "entityType": "User",
    "nonce": "0x626c3d15f3886526e014848aa9677351e0271e59e39813c2fd357a8d37c0e014",
    "signature": "0xf74a44f8b66b6a59bb3ecd7efa3dddaa6bc41c9f163baf7fb0992de5f7deef87332c01df61519ff218278fc2b190a60ab29b5f8c6b7560ca9335b702d6a786e81c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}