{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x20691010e5e3c07428164098b3acfaab84cab9c387f39210b9b43980cb869839",
    "signature": "0xcefc51f9f8e5b74f9a8d596df18797c6154a755c514891f56e394704b5b5a18b15d8fcc9775a521846cad575d264d0152269b91e80e82f252b2de9b6e09250e11b",
    "signer": "0x0e34D1E515D83E0777859bdA6E5D22168F854302",
    "userId": "842092467"
  }
}