{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x137ce5f0a3f2c4e37230d52058cb4a40a79930beb516bb713a2c499c170cc2f9",
    "signature": "0x2efabd987374ecf6729f194a0ea901d1b2724aaad77d7192c850b03fb3160c6823e58301726cb72b3668baa34dff33ed7b946c728b060165190ef0d57edf1ac61b",
    "signer": "0x0759071d18A0BC43B65C77d96CfBBe9eEFfD91DF",
    "userId": "100710418"
  }
}