{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354993",
    "entityType": "User",
    "nonce": "0xe519b723e24b9c7908d0afb0536792d3e5f7452461a7f1408b9a2d2891806d86",
    "signature": "0xd24e9bf513bace8148e5a989d80b656992daae9acc4fd8fd56fd362dcc89f0181028b8630e8694db07d737ca7a908ebdb9bf8cea8e50efa93bf8804c156a90951b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}