{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43309",
    "entityType": "User",
    "nonce": "0xf57576e61787cc4a917b8224c2b6f8f2f88e7501d1c23efdcc15fab240ac088d",
    "signature": "0x6b4167c0f348cdd8c2be5700c81c912102cc6fa4242084b33e5eaa4751c02d4e6ad2896553c7e8973f87a6c0786e7bdb045982397a236c3b4c273f92488237ef1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}