{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "370554049",
    "entityType": "User",
    "nonce": "0x4ea65570d888c14fec2ceed5febfea3c50c65fa0f9aa93411b7f5791794e8e65",
    "signature": "0x7f771ac5872bd758675a6b226f064efbbb3d1a16a3ea124b4254fb153a7913654e3f6c078ef7b1492af8626a2adddf8e28fd846f68a19bc2571bb498d4682cfa1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}