{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0x59f15fa66e81d6cf0852969a5dafda0aa635eeed87580fa905a84ec291ffa02e",
    "signature": "0x1fdbd06f901aa102387815b77f6fb5d0803cbe44b8f462b849c3371c55d639890a6101f82e874cb4e58d3bf885f6e184479a6b1303835fe48c97aa0bdd2e1e2e1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}