{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54015",
    "entityType": "User",
    "nonce": "0x9f555d4715e3e7a5f28e59235ff20968ad62e214e791d21eb171913d5e9cb50f",
    "signature": "0x253b4450ac3347fcefb9b262b1d30a5904ac09232be90a9db768c9db80888638440145af421e8e2c86d0d0823505a50998f6d44e1b78aadb3663fd788d3e60b41b",
    "signer": "0x7C2169544c0568cB3b210f320356B6A77E891F30",
    "userId": "495616082"
  }
}