{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8fe0fb4c75b40a351aa7baa620c43b78858893466fcd06af48a479192f5cf3e7",
    "signature": "0x407c41eb9a19d40a2b5e1d74b0f384642a694eba996ff4825a5dd2a93a4e950e42d08a246ec4afe2a378804943717621a7c853ccabe44f6183a4f0e92c407ff31c",
    "signer": "0x2894556dFf754e2CC414d20911061EED921C0C75",
    "userId": "426912480"
  }
}