{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8bd8ab3aea65990ffd570937a43b1a3e4ee3ffd3dfa9189853cb98f88e293c50",
    "signature": "0x64700555fbfcbfb4f725c0ff546ffb67300dc466d494dc76a9290093696319b7130202516388aa61d0ceed3f1c629bd7e7d07279f6e1ce1faa9fa8802e6c82081c",
    "signer": "0x9976A5bDB93F69653188778fe013ed45ca0c2Ab1",
    "userId": "85051708"
  }
}