{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0x2bf7616de4e3f26db679b82f73fe8901796a56a76169b755315d8b6358bb6c2b",
    "signature": "0x8136e03d758228b4aeabe08f2eb341fd68038109e242cc86165eca0f21388fbc33c8dc794db0d4af0e0835effb144e11df9116a7c6c07daaf869def9f1fc3d4e1c",
    "signer": "0xfe35D684b147C8245614c924bc9fb68A6B5E4116",
    "userId": "994921318"
  }
}