{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9e5e6152308182336d09b11d5b3d2f7fb39b7d8d10679c2d7bfd40c3643f892b",
    "signature": "0x2b0398c15dfd0b367c2642d8b9a63691075d1accf717639c96e8330a68322e4433229af70ce4008eaa0f9761cf6715c5731ffe05b28d5fe01a48785c8db4e4f91c",
    "signer": "0x680E955d6C9b03ef90e202Db35A7d58474f0EDdA",
    "userId": "141943527"
  }
}