{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "738673571",
    "entityType": "User",
    "nonce": "0x0a50d026ca342093f9618565f1aa93b4592a60fcb78f0c7179469159c52363ac",
    "signature": "0x0cd6d11e71446c236bfd98909c469d84b6fe3403800236d559fa52796716490a7f0beac34fbb3147e84d21417b9bf8be463541bc59c726d1a7d8ff1d759bc7311b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}