{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "714",
    "entityType": "User",
    "nonce": "0x3f6bfa773c3a2005d1e80f0064422e64d9bf8468af48b6a78117605798c617e9",
    "signature": "0x7e65bb31049010bd2f417bee236531b450fcfa176fe78c864c6553f539e558d91ddae59b9c9f92203695b12ccdb3076761b517c3ee4295ea2e9e83e9502749861c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}