{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5d251965bf68ec9a77f5cf8351f8a91e53ad5003a34ab8684dfc21ac91b8cdf9",
    "signature": "0x15da10d1ac7d5b230625bf4edea6ff9d1ebdd45b3c47b207db919753cc7167514737b20d5980447cbf4275a41df74e5d62fe6e7358f4a862c4c312101710c9551c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}