{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "978580446",
    "entityType": "User",
    "nonce": "0xb753ca78d75ee353d0d78645b2628a5762d9dcf6c51bb7b1b4689c46ba2c0831",
    "signature": "0xfae852db60a019535722301d3caf9776871e5a30f2d9a72c7bf52448d55015f9703a15b37d1e4383d2d190b685e71751437444fe35fa4613c93a767f8c61c5d31b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}