{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0833c0ab8ad77952a82acabf962cf27ff3064fbbb38ad9dc468a42272f1a8334",
    "signature": "0x9bb02cd2b02494440e1cf3205168afb87fedc35409d8d63f10b6dc87612e0ee449719e8013a7b65cbd60c5f5f0febb7d157a5de0350c4f9b87ecc62c546b8e0e1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}