{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4ad57ec05deb26cfdb463d5174fd51dbb6bf2eb98f3f6e1fbc8560a0cd1e6c7a",
    "signature": "0x49fa1ff07e9a0aa89a814fa0656daba50962a62fe7811d46aac3f953fe882b7072884a621b6b72656fcef3a9f0077f4e502375863258ee2cd1d7ae9104a01d261b",
    "signer": "0x4BbBDc4BC62218882F8f12d09E5F4C84300962bC",
    "userId": "54946407"
  }
}