{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353528",
    "entityType": "User",
    "nonce": "0x7eb20ab2e21adf162aa2f1a97d34ad16562208226790bb9b0b321af0a5e2a369",
    "signature": "0xa48aa8a7917ccf43a1afd7f2c518c3aea8187a2e407d7f13425cfd6623e35d5427c3d175ec78db5adddbfe0da0cbe73da92c242ed9c62f10f8945762294889971b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}