{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "195145",
    "entityType": "User",
    "nonce": "0x78ec756ec3d201ac09b838d6f82fe5562a78957ccac5a4de2dd4d1de222fd84f",
    "signature": "0xd310cf9a6d1a2d0c4f78afa37eb7feec90d8a69dadcc160919a7c65cd586be093330e6135aabd82fd4c7b06a61c6e9a27b6367c7db21747f06d439d8d08ea26b1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}