{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfaa14fedfb176e328095bdb0272ee45ceef053acfc12ffbae7c58f4ec2c04133",
    "signature": "0x89369aba4d75f11fb7b483a604a9b648071b007ee55b4f28cb50f04e1e09b63e06c8fad8f134bbe64c93be3186aff77e23fe0af2d6e190a8be393d4d29427d751b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}