{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1680fad61c615f25b932e85d141670228583968cea67cf1727e7f132c5fffeef",
    "signature": "0x7831760a7930d5ca65020b241e1c508c0b4a2a6f39294ccea36a484965d02ae6455d25c0bf0d7c834a8e470747ef54ff67f986329d9b54563dfdd1e427a5c30d1c",
    "signer": "0x9A5E16E48e938860681e75D3d0Fa9f61982e52e5",
    "userId": "267890965"
  }
}