{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xab76421a4d094c46396fabc2e8f0e320b6ef12d396bcf1c933b85338fdbeeec8",
    "signature": "0xafa45ef8c278d19c9fdfff72611f1cc732f9f63ace04999cae6be75cbd9c6cb5151aaed49c9ba0c4b86f05d413a5148d9f5ddf32bfa59ee3d8a40c4f5e8b2f6a1c",
    "signer": "0x6eC124c00C2D1F52478dbfB88C5486302a33da4E",
    "userId": "358446780"
  }
}